BigOlBass

I am new to fishing...well not really, but just now starting to really take it seriously. I love it. The problem is I cant catch anything. I live in a little town called Atascadero. We have a pretty small lake. I know there is plenty of bass and cat fish. There are lots of grass areas around the shore and alot of structure (concrete walls) in some areas. I was wondering if anyone could recommend a lure or something that can get me started catching bass. There are also shallow areas with brush and tree branches with really muggy water. I know people have to see things for them selves but Im lost and any advice would be greatly appreicated. Thanks alot.