Hi, GMC!
Here is a rather extensive ninth study in A major from Matteo Carcassifs "25 Melodious Studies for Guitar".
It contains many different techniques, such as position changes, slurs, slides, scales, and so on.
When you work on a long piece of music, always remember to break it down to short segments.
This time I have broken it to 7 parts. And I will explain it measure by measure. Each measure is very short. It will save a lot of time to learn the entire piece.