Your ph will swing from being low in the morning to higher before your lights turn off. I'm guessing that you are leaving your lights off during the cycle so your ph is not too bad. I wouldn't worry about it too much for now.
If you need to raise it later -
http://www.reefkeeping.com/issues/2004-09/rhf/index.php
This will be a good read for you also to help you understand more about calcium and alkalinity -
http://www.advancedaquarist.com/issues/feb2003/chem.htm
Your ammonia should spike within the first week or two, immediately followed by a nitrite spike. When I cycled my 75 gallon I put in my sand, some live rock, and filled it with water and basically just forgot about it for 2 months. After 2 months had passed I started doing some water changes and then I tested to ensure that I was ready for livestock. The point is to just be patient and remember the famous quote "The only thing that happens fast in this hobby is disaster."
