All of the information that you should need is in the dowmloading faq, reached by following the documentation link near the top of this page. ockham23 already has tried to point you to this information, but you seem to be ignoring the post.

If there is something missing from the downloading faw or that is not clear, ask, we will update it if needed or clear up your confusion. Do read all of the faq, don't skip over parts like the md5 sum just because you have never done that before.