There are numerous different ways to work, some are personal choice, some are used for specific projects. I advise people to start off using the Direct method to just get used to mosaic work. If you change methods then always give it a bit of a test run first so you get used to it.
Below is a list of the different methods, click on the title to be taken through to a description. If there is no link then that page isn't completed yet.
On board (wood, cement fibre, compressed foam etc)
On sticky back plastic