Let's kick off with the first part of the study.
Giuliani presents us with a variety of techniques within the piece so make sure you subdivide this section into smaller subsections so that you can really hone in on every technique and achieve complete control. Make sure that you observe the rests in the score as we don't want any of the open strings clashing with other notes creating dissonance. This is especially important during the 16th note scalar passages with underlying open string bass notes.