Advice for a DEP

[swampfox]

Hey guys i'm a DEP and i signed up for the 18xray option. I go to basic in july, and i'm in good shape, and all i've ever wanted to do was be in SF and i'm willin to do whatever it takes to do it, everybody says i'm crazy for doin it and i wont make it, but i say screw em' cuz i refuse to give up and hate losing. I was wonderin if one of yall could give me some advice on how to prepare and things that will help me the most in Selection. I also have heard of the pre-selection course that you go to before actual Selection, that is around 4 weeks long, and i would like to know what all that involves because i cant find anything about it on the internet or anywhere else, all i can find is about the actual selection. I appreciate the help!
Swampfox