Pam - I've found it helpful to only weigh once a week - I don't like to focus on the scale, but rather on how I'm feeling and how my clothes are fitting. That way, you aren't all bummed out when the scale is not your friend - it gives me a mental reason to eat whatever I want if I'm not feeling successful.
I rode 10 miles for the first time today and tried to keep it between 11 and 12 MPH. I was tired, but it felt good (once I stopped sweating!)