Modes.... need a simple explanation please.

[geo]

Hi guys, I'm a campfire strummer trying to stretch himself, I'm doing the FAWM thing and they mentioned using MODES but I can't make heads or tails of the explanation.... very little theory on my part... let's say this is a blues progression:E / / / A / E / / / B / A /What might a progression in a MODE look like?Thanks for any help... Geo