Watch the Basic 4-Note Roll online guitar lesson by TrueFire from Americana Greatest Hits
Lesson Source: Ben Wright's Bluegrass Banjo for Guitar Players
In this section we'll start with the first finger picking pattern, or roll. This is a 4 note pattern starting with your thumb, then index, back to thumb, then middle. Make sure you take your time with this and keep the timing between the notes equal. Do it slowly and let it set into your muscle memory.