| buddy guy is great, but you gotta be careful with him. He has made some killer records and some bad records. Check out the Stone Crazy album or the Sweet Tea record for the real Buddy, those are killer.
Muddy Waters 'Hard Again' is also UNREAL.
Also little walter, sonny boy williamson (rice Miller), howlin wolf, early paul butterfield with mike bloomfield on guitar(1965), junior wells (hoodoo man blues album) which has buddy on guitar, albert king, freddie king, early johnny winter (his first or the progressive blues experiment album (both have tommy shannon on bass who is the best walking blues player ever), red devils (unbelievable!, early fabulous thinderbirds with keith ferguson on bass who is also an incredible blues walker.
those will get you started. You do have to be a bit careful with most of the blues guys because they played through so many decades some of their albums may be a bit weatered down and you may have to study a bit to find the classic albums IMO. | 
