If you want be sucesfull, you have to make some kind of agenda of your progress. Small increase can motivate too. You just need to see it in numbers, because small incease propably you wont see... Important thing is not cheat with these records. You will lie only yourself. As was mentioned before, penis is not a muscle, so increase may be a little slower than you expect. Is not good waiting good results after few days of exercising. This work not. Trust me. Good frequency of measurement is monthly interval.

Your record would have this informations:

1. Length of erected penis with bone pressed
2. Width of erected penis
3. Length of flaccid penis
4. Width of flaccid penis

Width is measured in thickest place of penis.
You can ask for advanced guide, where are videos of exercises for better understanding in case you havent understand text form of this guide. You will have acess to the forum, where are only registered people. You can share there your experience with others.