There are many free sites, some better than others that offer a sub domain. Having experience with both paid and free hosting I guess I would look at your actual needs. For many of us just starting it is just fine to have the sub domain for the rest of us, shop around and see what you find. The biggest thing is that you need to do what is right for you.

Free Web Hosting with PHP, MySQL and cPanel, No Ads



That is my host. I used many free ones and although they have dropped fantasico installer unless you upgrade to paid, they are reliable. The customer service is difficult to deal with at times because they can be hard to reach. They have never had down time in the past 5 years I used them, and they are very feature rich for not paying anything. There is good and bad with every host and as far as free hosts go this is the one I would recommend.