Hi Ian,
I started the 5k program this week and just discovered the forums. I saw your post and was wondering how you're coming along with the 10k program? Good for you for starting a running program to improve your health in all ways. I recently read an article about people who use to stave off depression and anxiety and how it has really helped them. I wish you all the best!
Lovelylight
I believe this is meant to be three days per week with a day of rest inbetween each run As for speed, you start out slow and will naturally speed up after you've finished the program. "If you can run slower, you're running too fast."