Tru out various types of batting so that you can find out which ones you like best for what kind of project. We are all different, and the wadding I adore may be the one that you would never use.
When I started quilting I bought small pieces of various types of wadding and made a set of table mats (same pattern, same quilting - machine and hand -, just different waddings). It was very interesting to see how different they looked. I then used the mats every day and they got washed a lot. Again, washing made them look (and behave) differently. I learned a lot from those table mats, and still have them today.