Welcome to the forum, by the way.
If you are on a tight budget, but want to get something that has the potential to produce a high quality recording my personal recommendation is to get a pair of Shure SM 57's. These are a highly regarded "general purpose" or "entry-level" mic to get, given their performance, price, and durability.
Also, don't be stingy on the mic cables you get to go with your mic(s). Get a high quality cable if you want to maintain the fidelity of the source.
Get familiar with the search engine though, you'll be glad you did. There is a lot in the archives to help you out.
-Shaz