It's a two step process.
1. Become a famous artist-photographer...
which will enable you to...
2. Sell fine art prints for lots of money.
It's tough business. My suggestion is, a beginner should only do the print thing if he wishes to remain a hobbyist. It's hard to make a part-time living in La Vie photographique, you either have to go for it 100%, or have a day job.
But OK, start by placing striking, LOCAL-INTEREST prints in local tourist spots, local galleries/gift stores, and local framers. Be prepared to accept a commission-based sales scheme. In the meantime, start building your reputation by doing art fairs and getting interviews in local publications and radio and TV shows. Hint...those interviews will be a lot more forthcoming if you buy advertising, which is probably not worth it. There's a guy who sells really pretty, nicely matted, 8x10 digital prints in a local, high traffic gallery. I mean, gorgeous, knock-yer-eyes-out images! About 2 sales a month. And don't do the card thing. Just don't.
Of course, that's the timid path. Alternatively, you can jump right in doing outrageous, flamboyant work right off the bat and move directly selling through outrageous, flamboyant galleries. It's happened. Takes a certain amount of moxie.