If you are a college student, you can get the Github Student Developer Pack. It comes with a lot of useful materials like Free One-Month membership for Flatiron Bootcamp for Web Development, One month access to Thinkful Web Development Course, One year Free .me domain, etc.
It is all very helpful and some good places to start. There are also always Youtube tutorials, and many tutorial sites like codecademy, udacity, and more.
The best way is to practice every day, even if only for a half an hour.
If you have any questions feel free to send me a message! Normally I don't tutor HTML, CSS, and JS but I still try to practice it.