1.target aim drive instead of just learn what you see.Consist a Continuity goal
2.learn for use：use is the best way to test whether you grasp knowledge
3.Do your best form a knowledge network Tree.If you can't ,please just record what you see.
THE IMPORTANT thing i want to emphasize is when we first meet some knowledge we might feel it's hard to get charge of but we need to record what we learn instead of just do-do-do without thinking
4.follow the picture try to draw the area tree for yourself
