My favourite graphics editor. Links to graphics editing software, information. The following are separate applications which generate the code to copy to your page. I can't begin to list the website hosting services available, but the following resource is very helpful in the search for one which suits you. Links to registration pages for website listings, both free and paid.
Site also has links to banner creation services.
There are all sorts of sites and services relating to the rapidly changing subject of how to measure what's happening or not happening with your website. This service may be history.