What other flours can I use instead of wheat?

There are self rising, all purpose, rye, corn, oat, potato, cake, bread, just to name a few.

The above answer is true, however in most recipes you cannot simply substitute wheat flour with rye/corn/oat etc... because they all have very different properties. With speciality flours (such as those above) it is best to only use them in recipes that are designed for use with them. For example, rye is quite heavy, gluten free and has a distinctive taste. This makes it unsuitable for most sweet goods, and goods that require shaping (such as biscuits) due to the gluten free nature of rye flour. Oat flour is much heavier than wheat flour, and also absorbs more water. It results in hard, dense goods when used in standard baking recipes. Potato flour is also gluten free; doughs made with gluten flour are essentially the same texture as mashed potato.