[U2Lynne]

Pick a mirror site closest to you. But, the official bt site that I linked you to doesn't ask for a mirror site. If you are having problems with mirror sites, you're going to have problems with first installing java, then Azureus, then setting it up properly (because you probably won't understand many of the bittorrent terms). Start with an easy client and once you get the hang of things, move onto one that is a bit more involved, but also more customizable (like Azureus).