Jimmy Two-Times™
Coli Mods Catch Me If U Can Forgive Me Imma Ridah™
IT is a broad term. If you mean Computer Science/Software Engineering then u don't wanna go into that half-assed. Logic and Algorithms will eat your a$$hole, as will data structures.
30 minutes everyday at the exact same time in the exact same quiet place each day is all you need to learn the basics of any subject. 30 minutes every day for 5 weeks straight is almost 18 hours worth of study. combine that with your lectures/lab classes and you're probably at 50 hours worth of study time within just that 5 week period.
Stop trying to scaremonger people.