While nothing beats having a physical spiral-bound book on your music stand (no scrolling mid-song!), a PDF is great for backup. You can often find the Trombone Standard of Excellence Book 1 PDF available through educational resource sites or by checking the [Publisher’s Website/Authorized Retailers].
You might be wondering: Can I just use my iPad on my music stand?
: Sections explain note values, dynamics, and articulation alongside practical playing exercises. Diverse Musical Content