Age 14 - I could list a 100 benefits, but you would have seen all of them before
I started Nofap as an experiment on my self-control and willpower, and porn wasn't too much of a problem to me. At least that's what I thought. After getting about 20-ish days into nofap I looked back at myself and though "holy shit I've actually been watching so much porn. Never again! D:"
I could list a 100 benefits, but you would have seen all of them before within other 30/90/120 day reports. However, what has really stood out for me during nofap is the realisation of how... delusional my peers are. I've read a lot of "help me" posts here on this subreddit, and sadly, I can say that I know people my age that would write the same thing if they were to post here.
After starting nofap, I've also been getting a lot of attention from girls, but I've also realised that I'm just 14 - getting a girlfriend shouldn't really be my goal. Instead, I've decided to focus on things that will benefit me more in the long term: exercise, learning an instrument, etc.
That's a very brief description of my experiences, and if I was to include everything I'd probably end up writing a massive wall of text :P
Feel free to AMA if you want :D