Couch to 5k - week 2

Yesterday I did half of my week 2 - second workout before it started to rain. I went back out later that morning to finish, but in the process I aggravated something in my calf.  I massaged my leg, trying to work out whatever it is, and will try again tomorrow morning. While out today I stopped by the library and took out a book on running. I need to read about form, and what I should be doing to avoid injury. The last thing I need right now is to get hurt.