Codecademy
Level:
Price: Free!
Python, HTML/CSS, Java, JavaScript, SQL, Ruby
CodeHS
Price: $25/month
Python, HTML/CSS, Java, JavaScript, SQL, C, C++
freeCodeCamp
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Learn Python The Hard Way
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Vertabelo Academy
rubymonk
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JS for Cats
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Code First: Girls
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GA Dash
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skillcrush
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Khan Academy
HTML/CSS, JavaScript, SQL
MySQL Tutorial
try ruby
Node School
Code School
Python, HTML/CSS, JavaScript, Ruby
codewars
Python, Java, JavaScript, Ruby, C++, C#
TheCodePlayer
Learn C The Hard Way
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codebar
MongoDB
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Rails For Zombies
Learn JS
