So, about those foundation stitches, I thought I'd provide some photos. For trying out foundation double crochet, I would recommend opening the link to the instructions (below) in a new window, and then adjusting both that window and this so that they may be viewed side by side. That way, you can use this page as a reference as you work.
If you want to start a project with foundation double crochet, start with 3 chain stitches, and begin with step two on this page, except that you insert your hook in the third chain from the hook:
Following these instructions, your work should look like this at the end of step four:
The loop right above the head of the hook (that the double crochet seems to be coming out of) is the chain stitch made in step three. It is where you will insert your hook to make the next stitch. It's hard to keep an eye on if you aren't used to it, so stretch it out a little and hold on to it while you finish the double crochet.
After step six, your work will look like this:
Again, the top of the hook is touching the loop where you insert the hook for the next stitch. Once you have these first couple stitches done, it gets much easier to see what you are doing. After several stitches, your work will look like this:
As you can see, it looks exactly like a row of double crochet, and that's how you treat it. And you treat the initial three chains like a turning chain.
I hope that helps. Next up for harper (that's me): color work.