Free online courseIntroduction to Computer Science by FreeCodeCamp

4.93

(28)

17h05m of online video course

Quality content and selected for your learning.

Certificate

Download your digital certificate of course completion after watching all course videos.

Exercises to train your knowledge

Many of the courses available have exercises to help with learning.

Free lifetime access

This course is free today and always will be, from start to finish you will pay nothing.

Basic informatics

A great opportunity for you to get started in the computer world is to join one of our free courses using clean, uncomplicated language, making it easy to study

Teacher

freeCodeCamp.org
1 Courses / 713 students

We're an open source community of busy people who learn to code and build projects for nonprofits.

Course comments

There are no comments yet for this course.

Watch the 1st video of the course

Share

Evaluate course

Go to certificates

Report a problem

Course content

1h10m

Computational Thinking & Scratch - Intro to Computer Science - Harvard's CS50 (2018)

Learn the the basics of computational thinking and learn about the Scratch graphical programming language.

Learn the foundations of computer science in this course. This video is lecture 0 of Harvard University's CS50 2018 course.

????Notes: https://cs50.harvard.edu/x/2020/notes/0/
????Problem Set: https://cs50.harvard.edu/x/2020/psets/0/
????Source Code: https://cdn.cs50.net/2019/fall/lectures/0/src0.zip

??Contents??
?? (00:50) Introduction
?? (03:13) Binary
?? (09:37) Binary Lamps
?? (11:20) ASCII
?? (18:48) RGB
?? (24:00) Finding Mike Smith
?? (24:06) Computational Complexity
?? (29:44) Pseudocode
?? (32:36) Introducing Scratch
?? (33:41) meow
?? (34:04) Oscartime
?? (45:16) counting sheep
?? (49:18) pet the cat
?? (57:07) threads
?? (59:11) events
?? (1:01:23) functions
?? (1:06:45) Ivy's Hardest Game

Lecture taught by David J. Malan. Thanks to Harvard's CS50 for giving us permission to post this lecture. Checkout their YouTube channel for more great lectures: https://www.yout

2h13m

C Programming Language - Intro to Computer Science - Harvard's CS50 (2018)

Learn the the basics of the C programming language.

This course teaches the foundations of computer science. This video is lecture 1 of Harvard University's CS50 2018 course (part 2 since the lectures start at 0).

????Notes: https://cs50.harvard.edu/x/2020/notes/1/
????Problem Set: https://cs50.harvard.edu/x/2020/psets/1/
????Source Code: https://cdn.cs50.net/2019/fall/lectures/1/src1.zip

??Contents??
?? (00:00:00) Introduction
?? (00:00:50) Week 0 Recap
?? (00:08:01) PBJ
?? (00:15:59) C
?? (00:20:56) Variables
?? (00:21:46) Incrementing
?? (00:23:36) Conditionals
?? (00:32:31) While Loops
?? (00:35:52) For Loops
?? (00:40:47) User Input
?? (00:48:14) CS50 Sandbox
?? (00:49:48) hello.c
?? (00:51:18) Compilation
?? (00:57:31) Command-Line Arguments
?? (00:58:50) make
?? (00:58:30) Debugging
?? (01:11:44) get_string and printf
?? (01:18:23) int.c
?? (01:21:58) float.c
?? (01:24:29) ints.c
?? (01:28:39) floats.c
?? (01:37:54) parity.c
?? (01:39:13) conditions.c
?? (01:40:17) answer.c
?

2h07m

Arrays and Sorting Algorithms - Intro to Computer Science - Harvard's CS50 (2018)

Learn about arrays, strings, and sorting algorithms and how they work in the C programming language.

This course teaches the foundations of computer science. This video is lecture 2 of Harvard University's CS50 2018 course (part 3 since the lectures start at 0).

Check out our full CS50 playlist: https://www.youtube.com/playlist?list=PLWKjhJtqVAbmGw5fN5BQlwuug-8bDmabi

????Notes: https://cs50.harvard.edu/x/2020/notes/2/
????Problem Set: https://cs50.harvard.edu/x/2020/psets/2/
????Source Code: https://cdn.cs50.net/2019/fall/lectures/2/src2.zip

??Contents??
?? (00:00:00) Introduction
?? (00:00:54) Week 1 Recap
?? (00:04:47) Preprocessing
?? (00:07:05) Compiling
?? (00:09:01) Assembling
?? (00:09:29) Linking
?? (00:12:36) buggy0.c
?? (00:16:13) buggy2.c
?? (00:25:14) Debugging Tools
?? (00:26:02) RAM
?? (00:29:11) Arrays
?? (00:30:01) scores0.c
?? (00:41:47) scores2.c
?? (00:49:45) scores4.c
?? (00:52:21) string0.c
?? (01:00:42) Null Terminator
?? (01:03:06) strlen.c
?? (01:06:16) asci

2h08m

Memory - Intro to Computer Science - Harvard's CS50 (2018)

Learn about computer memory and how it relates to programming.

This course teaches the foundations of computer science. This video is lecture 3 of Harvard University's CS50 2018 course (part 4 since the lectures start at 0).

Check out our full CS50 playlist: https://www.youtube.com/playlist?list=PLWKjhJtqVAbmGw5fN5BQlwuug-8bDmabi

????CS50 IDE (must have free edX account): https://cs50.io/

????Notes: https://cs50.harvard.edu/x/2020/notes/3/
????Problem Set: https://cs50.harvard.edu/x/2020/psets/3/
????Source Code: https://cdn.cs50.net/2019/fall/lectures/3/src3.zip

??Contents??
?? (00:00:00) Introduction
?? (00:00:50) Enhance
?? (00:01:41) Week 2 Recap
?? (00:05:10) CS50 IDE
?? (00:14:24) check50
?? (00:18:37) debug50
?? (00:26:43) Taking Off the Training Wheels
?? (00:27:46) compare0.c
?? (00:29:54) compare1.c
?? (00:32:09) Strings Don't Exist
?? (00:41:40) compare2.c
?? (00:47:50) char *
?? (00:48:54) compare3.c
?? (00:51:09) compare4.c
?? (00:57:30) compare6.c
?? (00:59:54) copy0

2h03m

Data Structures - Intro to Computer Science - Harvard's CS50 (2018)

Learn about data structures in the c programming language.

This course teaches the foundations of computer science. This video is lecture 4 of Harvard University's CS50 2018 course (part 5 since the lectures start at 0).

Check out our full CS50 playlist: https://www.youtube.com/playlist?list=PLWKjhJtqVAbmGw5fN5BQlwuug-8bDmabi

????CS50 IDE (must have free edX account): https://cs50.io/

????Handout: https://cs50.harvard.edu/college/guide.pdf

????Notes: https://cs50.harvard.edu/x/2020/notes/4/
????Problem Set: https://cs50.harvard.edu/x/2020/psets/4/
????Source Code: https://cdn.cs50.net/2019/fall/lectures/4/src4.zip

??Contents??
?? (00:00:00) Introduction
?? (00:00:50) Week 3 Recap
?? (00:05:55) memory.c
?? (00:19:48) ddb50
?? (00:21:40) Week 3 Recap, continued
?? (00:31:07) struct.h
?? (00:32:37) struct0.c
?? (00:35:03) Linked Lists
?? (00:45:22) typedef
?? (00:50:23) Linked Lists on Stage
?? (01:02:24) list0.c
?? (01:08:44) list1.c
?? (01:25:26) list2.c
?? (01:40:21) Hash Tables

1h46m

HTTP, HTML, CSS - Intro to Computer Science - Harvard's CS50 (2018)

Learn the basics of how the web works with HTTP, HTML, and CSS.

This course teaches the foundations of computer science. This video is lecture 5 of Harvard University's CS50 2018 course (part 6 since the lectures start at 0).

Check out our full CS50 playlist: https://www.youtube.com/playlist?list=PLWKjhJtqVAbmGw5fN5BQlwuug-8bDmabi

????Notes: https://cs50.harvard.edu/x/2020/notes/5/
????Problem Set: https://cs50.harvard.edu/x/2020/psets/5/
????Source Code: https://cdn.cs50.net/2019/fall/lectures/5/src5.zip

??Contents??
?? (00:00:00) Introduction
?? (00:00:49) TCP/IP
?? (00:03:41) IP Addresses
?? (00:08:52) URLs
?? (00:09:44) DNS
?? (00:10:44) Dissecting a URL
?? (00:13:52) HTTP
?? (00:17:57) Developer Tools
?? (00:22:46) HTTP Status Codes
?? (00:29:23) HTML
?? (00:35:09) index.html
?? (00:40:24) image.html
?? (00:42:58) link.html
?? (00:48:38) paragraphs.html
?? (00:50:51) headings.html
?? (00:51:42) table.html
?? (00:53:22) HTML Validation
?? (00:54:26) Implementing Google
?? (01:

1h52m

Python - Intro to Computer Science - Harvard's CS50 (2018)

Learn the basics of the Python programming language.

This course teaches the foundations of computer science. This video is lecture 6 of Harvard University's CS50 2018 course (part 7 since the lectures start at 0).

Check out our full CS50 playlist: https://www.youtube.com/playlist?list=PLWKjhJtqVAbmGw5fN5BQlwuug-8bDmabi

????CS50 IDE (must have free edX account): https://cs50.io/

????Notes: https://cs50.harvard.edu/x/2020/notes/6/
????Problem Set: https://cs50.harvard.edu/x/2020/psets/6/
????Source Code: https://cdn.cs50.net/2019/fall/lectures/6/src6.zip

??Contents??
?? (0:00:00) Introduction
?? (0:00:50) Week 5 Recap
?? (0:13:01) resize.py
?? (0:16:52) Python Syntax
?? (0:23:48) Interpreting vs. Compiling
?? (0:26:52) hello.py
?? (0:29:54) string0.py
?? (0:33:02) string1.py
?? (0:35:00) ints.py
?? (0:38:26) floats.dpy
?? (0:42:58) overflow.py
?? (0:46:26) conditions.py
?? (0:48:53) answer.py
?? (0:50:57) cough0.py
?? (0:51:40) cough1.py
?? (0:52:19) cough2.py
?? (0:57:01) cough3.p

1h51m

Web Programming with Flask - Intro to Computer Science - Harvard's CS50 (2018)

Learn how to program for the web using Python, Flask, JavaScript, & jQuery.

This course teaches the foundations of computer science. This video is lecture 7 of Harvard University's CS50 2018 course (part 8 since the lectures start at 0).

Check out our full CS50 playlist: https://www.youtube.com/playlist?list=PLWKjhJtqVAbmGw5fN5BQlwuug-8bDmabi

????CS50 IDE (must have free edX account): https://cs50.io/

????Notes: https://cs50.harvard.edu/x/2020/notes/7/
????Problem Set: https://cs50.harvard.edu/x/2020/psets/7/
????Source Code: https://cdn.cs50.net/2019/fall/lectures/7/src7.zip

??Contents??
?? (0:00:00) Introduction
?? (00:00:49) Week 6 Recap
?? (00:03:57) MVC
?? (00:05:31) froshims
?? (00:07:04) serve.py
?? (00:12:30) application.py
?? (00:21:11) froshims0
?? (00:47:00) froshims1
?? (00:54:47) froshims2
?? (01:01:36) froshims3
?? (01:09:50) froshims6
?? (01:13:51) Bootstrap
?? (01:15:22) Form Submission
?? (01:21:19) words0
?? (01:35:01) jQuery
?? (01:39:29) words1
?? (01:41:56) wo

1h52m

SQL - Intro to Computer Science - Harvard's CS50 (2018)

SQL is a standard language for storing, manipulating and retrieving data in databases. Learn how to use SQL in this video.

This course teaches the foundations of computer science. This video is lecture 8 of Harvard University's CS50 2018 course (part 9 since the lectures start at 0).

Check out our full CS50 playlist: https://www.youtube.com/playlist?list=PLWKjhJtqVAbmGw5fN5BQlwuug-8bDmabi

????CS50 IDE (must have free edX account): https://cs50.io/

????Notes: https://cs50.harvard.edu/x/2020/notes/8/
????Problem Set: https://cs50.harvard.edu/x/2020/psets/8/
????Source Code: https://cdn.cs50.net/2019/fall/lectures/8/src8.zip

??Contents??
?? (0:00:00) Introduction
?? (0:00:50) Week 7 Recap
?? (0:04:02) C$50 Finance
?? (0:06:14) Cookies
?? (0:14:13) store
?? (0:20:49) Databases
?? (0:25:42) Mock Database
?? (0:27:34) SQL
?? (0:37:59) SQLite
?? (0:50:19) phpLiteAdmin
?? (1:11:21) lecture
?? (1:37:06) Race Conditions
?? (1:44:24) SQL Injection Attacks

Lecture taught by David J. Malan. T