For one, you kinda have to explore what flips your switch ... whether it's just thinking about stuff or actually seeing stuff or doing stuff or a combination.
But, there's been some interesting information about porn that I've come up on recently. Most interesting is that it can actually be counter productive. If you NEED porn to get off, then it's counter productive. Also, the more you get into porn the further you want to push it. You find that the "regular" porn you were watching starts to bore you and you look for a "next level" of stuff. Pretty soon you're watching crazy extreme porn and that's not even doing it for you. I know saying this without citing the info is kinda useless but I can't remember where I was reading this. But I can attest to the truth of it. And once you're at a point where regular stuff doesn't do it for you any more it's even harder to go backwards and be with an actual physical partner and not have to rely on "external" things like porn to get your rocks off.
So my personal recommendation would be to try physical things first or just use your imagination before you fully delve into the world of needing porn to get off.
Also, relaxing and not forcing stuff (even when you're just with yourself) is key. If you're too tired or too depressed or just not in the mood and you try it anyway, results are usually poor. If you do manage to get off, it's always kinda like, meh. If you're relaxed and in even a moderately ok mood, you'll do better. That totally goes for when you actually have a partner too. The worst sex you can have is the kind of "mandatory", push-yourself-to-do-it-just-to-do-it variety or when you're too tired or just not in the mood.
As for frequency, there's no "right" number for that either. Some people like to get off multiple times a day, some find that a few times a week or even less infrequently is fine. The older you get the less you'll actually need it frequently as well. And there are some people that just don't have a high sex drive and that's perfectly normal as well.
