It is important to remember that the reason you learn chord shapes and progressions is so you will be able to play freely over the changes to real songs. To improvise well, you will need to know lots of popular songs which have become standards. There are many books available which are compilations of standards, often combined with more contemporary tunes. Probably the most famous of these is "The Real Book". Staff in most music stores will know about this book and it is recommended that you purchase either this book or a similar one and learn both the melodies and chord changes to as many standards as possible.
To get you started, here are some progressions based on a variety of Jazz standards. Learn each one using the chords indicated, and then try soloing over them using all the scales and modes you have learned, the more you do this, the easier it becomes. For an in-depth study of jazz improvisation, or any of the styles used in this book, see the other Progressive Complete LearnToPlay Manuals listed in the Introduction (page 4).
No chord changes are given for this track because the Blues progression is one you need to be able to play by ear. If you need to work out the changes, look at the Blues in E on page 190 and transpose rt to the key of A. However, it is better if you get away from the page as soon as possible. Your aim should be to play any progression by ear in any key. This is a lifetime study, but all good players can do this to a large extent.