This is a fabulous generator. Make your own - get the code and add any images you want. For a sample visit Birthday Backgrounds - Jumpy's Birthday Countdown
There are 21 interactive lessons to teach yourself html. I have not found anything better on the net to help you learn html. His instructions are very easy to follow.
Visit my working site for more. Lots of information on java, javascripts, colour, browsers, flash, images, logos and banners. Backgrounds of every colour. Colour Cube. Colour Picker. Web Safe Colours, Web Colour Names and HEX codes.