Welcome to your new obsess... er, I mean hobby. 
The Folgertech 2020 Prusa i3 is a fair kit - we have one. Once you do get it up and running, I highly recommend you print out replacement parts as soon as possible (the stl files are on their website), along with a couple of upgrades for it. Or, ask around for someone to print them for you (they really should be done in ABS)
the upgrades are these:
Y belt tensioner set (use the low-profile version): http://www.thingiverse.com/thing:188958
Better thumb wheels for bed leveling: http://www.thingiverse.com/thing:29782
MUCH better extruder housing (you will need a spring from your local hardware store): http://www.thingiverse.com/thing:650957
and if you are so inclined, an X belt tensioner set - designed specifically for the Folgertech 2020 (you will lose a few mms of X space, but it is far better than sloppy belts): http://www.thingiverse.com/thing:872944
Also, when you get your kit, thoroughly inspect the Ramps board, especially the back side, for sloppy soldering & excess solder flux left on it. There have been issues on some of the early ones. Hopefully they have that QC issue sorted out by now.
SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1