Finding the perfect sound is not easy for guitar lessons. Your guitar tutor can stare you in the right direction for your guitar lessons. The best practice amps for guitar lessons in my experience are the Fender and Marshall amps and any great guitar teacher will tell you the same thing. There are more amps out there but these are generally the best for guitar lessons as any great guitar teacher will tell you is the above mentioned.. Make sure the amp has reverb and distortion (rock sound). Good luck!!