Update Your Training Log Frequently
In order to make effective planning decisions, your coach needs to know more than just whether you completed a run, or how far/fast.
Be sure to update your log as often as you can, and include plenty of subjective details about how your run went, and how you feel in general, as well as any other life/work stress at the moment.
The more you add to your log, the better your current and future training will be!