Below I have listed a few sites that offer above ground pool directions. These would be helpful no matter what make or model of pool you have. For more specific instructions you can always try your pool manufacturers website. You may also want to pick up some tips on our pool installation page.
Swim n Play Inc. have directions you can download from this page.
Royal SwimmingPool.com has a couple of sets of generic instructions.
Many of these above ground pool manufactures will have a website where PDF downloads will be available. For the most part, these instructions are all about the same. There is not much difference from pool model to pool model when it comes to round pools. Oval pools, on the other hand, that's a whole different story. The brace systems can include a million parts and you better put them together correctly.
The good news is that if you are looking for instructions for a used pool the brace system is probably already assembled, at least for the most part.