If your domain is your address, hosting is like the actual house within which your site will live. It's your own little slice of the internet — the place where all your website files live. Hosting is very affordable these days, so don't unnecessarily scrimp on costs. Go with a reputable, reliable provider because your affiliate marketing business depends on it.
The amount of money you can make can depend greatly of you budget. If you have a small budget and you don´t have a lot of money, then you have to start with free marketing methods like article writing, blogging, forum marketing and such. It takes a lot more effort ant time to have success with these methods. But they are very effective if you keep writing articles and participate in forums. You can make $100 a day within just a few months just with article marketing.