To study smartly?

So I want to start to change my bad habbit : studying all-night-long before exam. I wanna to get the truly concepts of knowledge I've learned in college before I'm graduated. Wkwk! And I found this interesting video. Watch it!

I summarize this :
1. Look what it is all about. Ask a Question before you study
2. Read, and find the answer!
3. Find the whole picture. Recite it by your own words.
4. Study effectively 30 minutes. Break 5 minutes. Repeatedly.
5. It's not only the mater of the quantity, but the QUALITY.