Read what paper cutter said. His site is costing him about 7 bucks a month. If you can't afford that you probably should not be in business. My site costs me less than that and I get about 80 jobs a year from the website.
I would worry about a web site before I spent any time doing a facebook page. The facebook page is nice to have and will bring a little business but the web site is the important thing.
Get hosting and a URL. Use wordpress, buy a template. Find someones site you like and set yours up along the general lines of the one you like. Just make sure the one you like if far away from you.