Whammy, if this is about learning i would start with a indica dominated strain as indicas can take more abuse and stress then sativas and they don't grow too tall. Also it won't be too pissed if you miss a watering for a day as well.
In general good strains to start with are Skunk#1, Northern Light#1, Afghan and similar. they are either indica heavy or as Afghan almost 100% indica. Wit skunk you have to double check if smell is a problem in your grow, if so you will need a big carbon filter at least.
in terms of seed banks am i a nirvana fan, the Attitude Seed bank is sure a good looking place and the price/value ratio is good as well but i had no business with them nor do i know anyone that had any either. So, right now i'm still a bit skeptical - which doesn't mean that they can't be great - as i seen no feedback from anyone here i know long enough to be sure that it is not just someone from the shop spamming here, as this always a posibility as well.
So, with this shop i know i leave you in a good hands:
Nirvana-Shop