There is a saying about experience, "Do you have 10 years of experience, or one year 10 times over?"  It embodies the dichotomy of, "Practice makes perfect," vs, "just noodling around."
 
Deliberate Practice will help you make the most of your time.  Understand the theory of practice and how it will accelerate your professional development. 
 

Note: Important Driving Directions!
If you're coming via 465 or Northbound on Meridian, you'll be well served to hop off of Meridian just North of 465 onto 103rd St (East), and then back North on Pennsylvania.  This should save you ~10-15 minutes of traffic.

Location