Well if you have a spinner bait you're almost there to have what you need. Crank baits are great and so are plastics. Most of the lures that are out there for bass fishing work pretty well. The HARDEST part of bass fishing is FINDING them. Read up on where they lay and feed. The next thing is if you fish your local waters you have to match the water color to the lure. ie... for spinner baits the only colors you really need are Chartruse- for stained or murky waters and White- for clear. These two colors are a good start to your arsenal.
Next is crank baits- here you have to match the color to the available bait fish or other food AND ALSO depth. Dont forget to at least have a chrome and black back zara spook. This is to be fished on evenings and mornings... read on how to "walk the dog" its a blast to catch a bigg'n exploding the surface.
Worms - well this is a major topic. there are hundreds of ways to fish these and just as many colors. Start with a 6 inch worm with a curl tail (since your water is stained) and Carolina rig or Texas rig (you will have to read up on these techniques.
As you can see there are a ton of different ways to catch bass. I think a lot of bass fishermen(and women) get to the point that the tackle box is more of a prize collection of "pretty baits" and half of them don't get used hardly at all. We all buy new "trick" baits and try them a couple of times and then revert back to our favorite tried and true lures. For me its usually worm fishing. In the mornings I throw a top water bait then when the bite stops i go to worm. I even have my favorites, for the colors I almost always use (watermelon).
Good Luck and enjoy your new hobby. Just remember one thing. Fishing is FUN not work. If you are not catching anything that day it is still nice to be out.