quote:
I am doing every school play offered and give my heart to every role - even the roles I hate (which i assume most actors do). I love acting but don't know where to start
It sounds to me like you already have. You just expect it to go faster than it does.
How do you start acting? Start acting. Period.
Your question really seems to be "How do I most effectively start MARKETING my acting?", which is a different point and one the other posters have addressed. But for acting itself, you're already doing a good part of it.
What else could you do?
Work with friends to get together small bits to put up on YouTube.
Get BackStage every week and try to submit to a number of projects each week.
If you're in a place where there are open calls go to them if only to connect with other actors.
Get accent CD's and start working up a repertoire of accents (at some point you'll want to work with a coach, but this is a cheaper start).
Get monologue books and choose one or two each day and try to break it down, find a motivation, read it out loud etc.
Connect with people your own age who are acting, making films, etc., so you build up your own contemporary resources and are less dependent on knocking on the doors of "gatekeepers" (not that you can avoid that as well.)
Hmmm... There's quite a bit to do, as I think of it. The important thing is, having something to sell comes before worrying how to sell it. Be sure you give that priority.