Don't discard the satin - it definitely has its place for the right subject. I would just suggest that you put it to the side for a while, while you learn on glossy or pearl.
Originally Posted by IOS
I'd recommend looking for an older Kodak Black & White Darkroom Dataguide, or some similar publication. They have samples of different textured papers (using Kodak letter codes) and they'll give you a sense of the differences, and appropriate uses for more textured papers.
IMHO you may be making the learning process just a little bit more difficult than it need be. Using old paper, and non-standard developers, may result in erratic and unpredictable results. I would put them aside for a while.
What you need is consistent paper and consistent chemistry, so that any change in your results will flow from changes in your technique (which you control).
Once you gain experience with standard, new paper and the correct chemistry you may find it fun and useful to try the old paper, and see how it compares. It may be fine, in which case you did get a bargain. Unfortunately, until you have some experience, you probably won't be able to tell .
Don't get discouraged - keep having fun!