There's a lot on the internet, but 99% is not worth it. Too much of it is just bitter, lonely dudes hating women, and the rest is tips for getting equally pathetic women with no confidence to sleep with them.
It often devolves into crap, but there's occasionally a good cause, like helping to educate fathers who are in custody battles. You're also thinking of TRP which doesn't technically have anything to do with MRA, but they get lumped together.
I mean, I'm pretty content with my rights as far as my gender is concerned so I don't worry about it too much.