Watch the One - One - Two Forms online guitar lesson by Brad Carlton from Guitar Lab: The Golden Arp
The one-one-two forms of the add 9 arpeggio in 2nd inversion are very comfortable as they encompass a three fret area on the fingerboard. Start out by viewing a traditional 1st inversion triad and then simply add the 9 on the highest string. Remember that I have chosen to label 1st inversion of the add 9 arpeggio to mean the 9 is the lowest note; 2nd inversion then means the 3 is the lowest note and so on. These forms in 2nd inversion are great layouts for piano style licks, Hendrixy rhythm guitar fills, and they are also great for lead work. I'll show you some different stylings of this form with pedal tone bass lines as well as fingering options.