Ok so I have been going to school now for a few years learning all these computer languages but between semesters and after the class is over I am afraid that I am going to forget all that I learned. In the past 3 years I have learned html5, css3, javascipt, java, c++ and now this semester I am going to be learning c# and sql. Are there any websites that have exercises for free that you can test to make sure you are retaining what you learned. I'm afraid I will have to carry all my textbooks with me to my first job because I can't remember how to do anything since outside of classes I haven't used any of it.
Any suggestions?
I need practical uses for it.