What is the best study habit?

We are going to take an IT certification test in October 1 but was only told yesterday. Basicically, I only have 2 weeks to study a very broad topic. We were given 5 books as review materials, with each book having about 250 pages. Any suggestions is...

for example im used to study with loud voice like i'm talking or teaching and sometimes fighting with someone, its ok but bad thing is that i cant study at a library. or a friend of mine used to study while watching football and generally in busy places...

I tend to have this thing, where I tell myself As soon as I get home, I'm going to finish all of my work! Well, when i get home i always get on Facebook hehe How should I actually STICK to a study habit?

Anything that really got you through the tough classes, any advice would be great, thank you.

have any good ways to study for a test/quiz??

I'm trying to learn how to study better cause I haven't been doing well in school. Does anyone have any hints?

My friend told me today she wanted to break her habit of complaining, and said people said it takes 21 takes to start/break a habit. Is this true? I have an after school study schedule that I'm going to follow five days a week for now on. On weekends...