This is a very useful method of building up note choices from the ground up. We apply it through the 12 bar Blues here, but you can do this with any tune. We start by playing Roots only, move on to Roots + Thirds, Roots + 5th, Roots + 3rds + 5th and even learn about a very musical voice leading option at the end. Have fun working through this with the sheet music and once you are comfortable, build your own lines and practice them with the playalongs. This same principal can also be used for Electric Bass.
Enjoy the hang,