The hard part would be advertising. You could upload teaser vids to xtube and xvideos, I guess, depending on what you do on cam in order to get people to come to your website.
Get a hot girlfriend that wants to do/does porn and will only do scenes with you. Afterwards if youre good enough you can go on with other girls.
It worked for Scott Nails and Dane Cross to name a couple.
You can as long as you get permission from the websites owner, Rob_E, otherwise it'll be considered spamming which wouldn't be good.
If you are serious about a career in porn you should submit some professional pictures to porn websites - they are always looking for new (and affordable) talent. As long as you take it seriously you could do quite well for yourself. The one down side to men doing straight porn is they are paid much less than their female co-stars.