Congratulations, Rich!
As many of us will tell you, you have earned a "Certificate to Learn".
You will never "master" any one aspect of aviation. There are just too
many variables.
Every time you take off, cruise or land, something is always different.
Weight, temperature, wind, everything.
What you will learn is how to adapt to each situation, and apply a given
technique to a given condition.
Use your brain, be safe, and above all... have fun!