Welcome to the Forum!
Logging your blood glucose is pretty easy, you just input the number from your meter and tell the app what type of reading it was, out of bed for example. Logging the food is a little different, see the "GB Help" thread for those details.
Read through the first three threads in the Type 2 Section, when you get a chance, if you have not already done so. These threads will most-likely help you a lot. Self education is one of the keys to successful management of your diabetes, along with a healthy / sensible diet and exercise. Basically, diabetes requires a life-style change for the better. Good luck with your control and management.