Which kind of yoga to begin with??

[stardust]

Hi all!! I'm interested in taking up yoga, but I'm sure which one to sign up for. The kind I'm interested in is those that can tone my body and help me lose weight... currently, the sports hall they offer 2 kinds of courses: hatha and ashtanga yoga.. I don;t know whats the diffrence between these 2.. so I hope someone can enlighten mE!! =) And if possible, if you noe of any good n cheap places for yoga in the west, tell me too!! email me at greenfuzzie@yahoo.com thx ppl!!