I am 22, and I picked up the guitar about a year ago. I have been keenly following Sir Pebber Brown, and I do have most of the videos especially the ones that he emphasize proper technique.
About a week ago, I noticed that I wasn't quite playing with the very tip of my index finger, and it was quite inhibiting especially when trying to learn appergios. I opted to correct it but the tip feels excruciatingly painful whenever I press onto strings. I have gone ahead to do trills even with the pains but it's really slowing me down. This is happening on the index finger alone. Please help me.