The scan part is easy. You get a bunch of units on the screen moving around for a period of time. They are call letters, and underneath numbers between 100-999. You are given a range. If you are given 200-300, and on the screen you have N37/250, N58/350, N78/800, you would type in 58, 78 etc..... You type in the numbers falling OUTSIDE of the range. Learn to use the num pad, it helps a lot!
I had a hard time with analogies. I think I was ready to finish up the test, and wasn't thinking it through enough by that time. I believe the analogies section is the reason I got the score I did (82). Other people on here though had no problem....
Good luck! When do you take the test? Did you download the update for the green book's software?
http://www.asa2fly.com/Air-Traffic-Control-Career-Prep-P714_product1.aspx