What are some different ways of preparing flax seeds?
The tricky thing with flax seeds is to grind them fine enough. I've found that my coffee grinder, for example, won't do the job because the seeds have a very hard coat. You can buy vacuum packed pre-ground meal and that may be a good option.

Once you have ground flax seeds, they can be added in small amounts to baked goods very easily. Adding say 1/4 to 1/2 cup to a muffin, quickbread, or yeast bread will work nicely and add a nutty flavor.

They can also be sprinkled on salads or grain dishes. You could add a little sea salt and use them somewhat like gomashio.