Welcome to the hobby! I'm sure you will find it very addicting 
I would reccomend you start with the whites. they are quite hardy, and can withstand some of the common newby mistakes. after you are comfortably taking care of the whites, then you can move on to RETF, just make sure you read up on them too because their care is slightly different.
This caresheet was reccomended in a post below, and it is a very good refrence.
http://allaboutfrogs.org/info/species/whites.html
I also have a pair of whites so feel free to ask any other questions you might have about them.
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0.2.0. Leo
1.1.0. WTF
0.1.0. Irish Setter
2.1.0. Holland Lop Bunnies
1.1.0. House Cats
Too Many Fish!
Check out my site ~ www.freewebs.com/stephsgeckos