These are ro basic blues riffs most guitarists should know.  Metal for life!!!!!!!!!!!

e---------------------------------------------------------------------------------------------
b---------------------------------------------------------------------------------------------
g--------------------------------------2---4---5---4---2---4---5---4--------------------------
d----2---4---5---4----2---4---5---4--0---0---0---0---0---0---0---0----------------------------
a--0---0---0---0----0---0---0---0-------------------------------------------------------------
E---------------------------------------------------------------------------------------------

e------------------------------------
b-----2--0--------------------2--0---
g--1--2--0--1--1--1--1--1--1--2--0--1                     All simple riffs.  Just relax and feel the blues.
d--2--2--0--2--2--2--2--2--2--2--0--2
a--2--------2--2--2--2--2--2--------2
E------------------------------------