<human>: I'm currently learning how to play guitar. I'm left handed, but my teacher didn't have any left handed-guitars and I'd lost my guitar pick. So I tried to strum a right-handed guitar with my right hand, but it didn't make any noise. I strummed harder and it made a weird buzzing sound. I kept strumming to try and get the right sound but it didn't work. By this time, my right index finger was hurting, but that didn't stop me. By the time the lesson was over, my index finger had a massive blister on it. I still have it and it hurts like hell! (In case you're wondering, I'm typing all of this with my left hand.)

Can you summarize the given text in a few sentences?
<bot>: I'm left handed and taking guitar lessons. I lost my guitar pick and didn't have a left handed guitar. Had to strum a guitar with my right hand. I strummed too hard and got a huge blister.