KBABZ wrote:
Here's an idea: If you're good at poems then write a poem compilation. If you're good at fiction, write a fiction story. If you're good at short stories, write a compilation of short stories. If you can convince your parents to approach a publisher you're on your way, but I have no idea of the processes involved with getting a book published (such as whether it costs just to put forth the idea to a publisher). Other than that, I'm all out of ideas.
An underground alternative to this is to print out a copy yourself and make several photocopies of it. Not anything fancy, just a few sheets of paper stapled together like a pamphlet. Then you could try selling it on a busy street, or maybe ask stores if you could leave them a few copies, maybe letting them keep a small percentage of the profits.
The only problem with this is that your work might get stolen. You should probably copyright it first, or at least mail a copy to yourself in a sealed envelope and leave it closed (the idea is that you can show a judge the date on the stamp to prove you wrote it first). This is only a very simple method that shouldn't be trusted, though.