Here is a list of sites which I find useful and which are helping men/boys to improve their lives and understand the harmful effects of watching porn and excessive masturbation (fapping)
1. YourBrainOnPorn – This site is run by Gary Wilson and it contains all the research which supports the nofap theory. It consists many personal stories depicting the effects of porn on their lives and benefits observed after abstaining from PMO for a certain period of time. It is a go to place for all the info you want on NoFap and I personally recommend reading these two pages to all newcomers.
2. Reddit NoFap – A subreddit on reddit.com. Its a community with more than 177000 members currently. Mostly younger people in their teens or 20s abstaining from PMO (porn, masturbation, orgasm) for a certain period 30,60 or 90 days challenge and seeking health or social benefits and better performance in school or at work.
3. How I Stopped Masturbating to Internet Porn and How it Changed My Life – A personal thread on medium.com
4. Stop-Masturbation – Another blogspot blog like this blog itself with some informative posts.