Blues guitar is often defined by its light, natural-sounding distorted crunch and a pleasant, round tone. You’ll also need to use the natural expressiveness of the guitar to be able to play both softly and loudly during a blues song, and so I always recommend blues musicians going for a tube amp. Set your gain right where you can play lightly for a nice, clean tone, but where you’ll also get some tasty, soulful distortion when you dig into a note. If you’re getting a tube amp, I’d recommend getting something with a lower wattage so you can crank the gain right on the amp and use its natural distortion settings (no need for fancy pedals in the blues).
We are conditioned to think that great vocalists are just born that way — “gifted,” “blessed,” and we wonder if we were given those gifts too… Really? No. Shut up. Try to remember that this is not true. You need to put the work in if you want to be great. It starts with getting yourself a good vocal coach.