Once you have a good amount of information collected, you might consider publishing your work.
There are many kinds of published family histories, from scrapbooks to family trees, to individual biographies. You can have them printed, bound, make e-books, a website, or just print off sheets at home and staple them together.
For more professional looking books, or to have the option to sell the book, consider self-publishing the book through sites like Lulu or Blurb.
But, as usual, the best list of links for more information can be found at Cyndi's List. Go check it out.