How can I train my dachshund? Pic included?

I have a 5 yr old dachshund named Lexi - a href="http://viewmorepics.myspace.com/index.cfm?fuseaction=viewImage&friendID=395965015&albumID=1578325&imageID=6874077" rel="nofollow"http://viewmorepics.myspace.com/index.cf…/a - and I want to start training her for obedience competitions. She is CKC registered and there are events coming up for the next few months and I'm hoping to be able to enter her into one on Nov. 7 & 8. I don't want to take her to a trainer-can't afford one right now-and I have tried to train her in the past but never stuck with it. She can, at times, be a pretty quick learner. Can anyone tell me the best way to train her-leash & basics. And tell me what all they look for in the dogs in Obedience trials? Also, how can I train her for agility-she's pretty fast. I don't have any equipment, so how could I make some myself? I live in Alabama if this matters.