1.  Transport System  specific:  city bus
2.  In the first week, although Oviedo is small and its possible to walk almost everywhere, I was sick (later diagnosed with kidney stones) and couldn't walk anywhere.  I had never used much public transportation before this and the bus system was beyond me.  I go on like 5 wrong busses in the first week.  Or even if they were the right busses, they were going in the opposite direction.
3.  Now its very easy for me, even if I've never gone to a certain place or used a specific bus, figuring out which one to take seems simple.
4.  I think the change was just basic trial and error, adjustment and learning from my mistakes.
5.  Now I feel like I could use public transportation almost anywhere without too much trouble.