Here are how some of your most common scales and chords are spelled when rooted on B.  If you're unclear on how these number patterns work, check out www.guitar-instruction-free-lessons-online.com/number-system  or www.guitar-instruction-free-lessons-online.com/chromatic-scale .  To learn to play these scales and chords on your guitar, visit www.guitar-instruction-free-lessons-online.com/guitar-scales  or www.guitar-instruction-free-lessons-online.com/guitar-chords .  To learn more about the theoretical implications of these musical patterns, check out Scotty's video home study program at www.absolutelyunderstandguitar.com .