Reddit reviews Legends Of The Blues: Volume 1

For me, I got into some blues compilations with lots of different artists, something like this:

http://www.amazon.com/Legends-Blues-Various-Artists/dp/B00000274Z/ref=ntt_mus_dp_dpt_1

After a while, you start to get a feel for what you like and what you don't like. Reading the liner notes helped put things into context. It's a whole lot easier these days with digital.

Good luck with the harp! I tried it myself but I never got good at it. As mentioned, Little Walter is a good place to start, as is Charlie Musselwhite.