Point me in the right direction

Read a lot of the threads here. Starting out new and finding this site is a big advantage. Use other's experience here instead of wasting money on your own.

On the home page, on the right hand side, choose discussion forums. At that point, you can search for whatever you want. I think for a starter system, you may want to choose newer components instead of early 90's components. The early 90's gear may be hard to find and won't be able to keep up with the newer gear (especially in terms of digital gear).

With a little research on this site and others you can build a system that outperforms a home theater in a box and spend the same amount of money. If you buy used, you'll be even farther ahead.

You have to start by telling us what you're looking for. How much do you want to spend? $500? $5000? I'm guessing closer to the former than the latter. Next, what do you want your system to be able to play--CDs, DVDs, LPs, radio, etc. You can do better than home theater in a box, but you need to think about what you want first.

These things depriciate quickly.
Used is usually better if you are budget concious.
Early 90's gear may work to an extent. You may be able to find a matching center to your speakers-I doubt it.
One thing that I find very important is to have your front 3 speakers and amps the same.
You may end up using your speakers for the rears or finding a matching center.
It is less likely that you will find a 3/4 channel amp that will match your stereo amp (if you have a receiver, sell it). A nice stereo amp may sell for enough to buy some HT gear.
My last bit of advice: Don't skimp on the sub or center channel. They handle the bulk of the work.