I've done 41 mics so far. I'm over the initial hump but that's just the first foothill at the base of the mountain. Topic idea: when should a comic start to promote himself? Do you often see guys promoting themselves too soon? Or posting clips online they shouldn't be posting? Do some comics not promote enough?
My .02: Get a solid tape and put a clip up online. Use that to get shows. Keep hitting mics too. Whenever you get stage time, destroy. Hope people notice. It will take a while though.
Once you get a funnier clip down the road, use that one instead (and delete the old one if it's something you no longer want others to see). Have a website that people who like you can check out, just a simple one is fine. Start an email list and/or a Facebook page so you can keep in touch with people who like you. Also good: Start a show and promote that. In fact, that may be the best way to get attention at an early stage. Have a kick-ass show and fill the seats. This is a good way to get other comics to know about ya too.
If someone comes up to you after a show and says they dug your set, ask them for their email or give 'em a biz card with your contact info so it's not a one-time only thing. I wouldn't worry too much about promo photos or anything else that's gonna cost ya a lot of money. Not worth it at this stage.
Also, recognize that people will judge you by your first impression. If you're not bringing A game yet, you might want to hold off on approaching industry or producers of top shows. They may write you off and then not be tuned in if/when ya do get better. Right now you're like a band with its first demo tape. Get better before you turn on the "full court press" of promotion.