To improve on LR, I don't think it is enough just to keep practicing preptests. You need to apply your knowledge of logic to the tests, rather than learn logic from them. Here is a useful link I found http://philosophy.lander.edu/logic/tvs.html
Yep. I go through each indented rule methodically and piecemeal. Afterwards, you can step back and see how the rules interact with one another (because they always will) and see the relationship in a holistic way.
It honestly bothers me when I see people partying...I'm thinking "what are you going to be in life?" At one point, you have to get your sh*t together and make something of yourself so if that means I will be boring...so be it.