Personally, I would try to not use brushes that much, or else you'll come to rely solely on them. C4ds are an excellent replacement to brushes. go to
deviantart.com and search c4ds, and a bunch of packs will come up. For most of them, they come in packs that you have to unzip. In order to unzip them, you'll need a program called winRar. You can google that. I think it's free. You can also find brushes on deviant, but like I said, it would be in your best interest to not rely on them. You should also look for tutorials. You can find tutorials on deviant, as well as gfx sites, such as
http://planetrenders.net,
http://sigresource.com, or
http://hidden-designers.com. As a beginner, some advice I would give you is this: Use as little of text as possible (or even no text) and don't put it in the corner. Try to pick good qualitity renders (the planet renders site above is excellent for renders- renders are images without a backround) or stocks. (stocks are regular images with a backround) A bad quality render/stock will make just about any tag look bad. Also, try not to over do things. Often, less is more in sigs. Don't just cover your tags with brushes all over the place and wild in clashing colors. Try to have some organization. Another big thing in sigs is flow. Flow is like the "direction" the sig is going in. For example, my flow in this sig (
http://i41.*.com/25fpvyq.jpg) would be going to the to right starting from samus. Flow is necessary in most sigs. Tell me if you have anymore questions.
I don't really do Gfx anymore, so I might not be the best source to learn from, but I think I know a thing or two.
ib4walloftext..
*sits up* Ahh, better.