Congrats on your new-to-you Sunline. From the pixs it looks nice!
At one time or another, almost all of us been where you are. For us, what helped was to read through the Forum threads to learn the things we needed to learn (and, four years later, we're still learning). We'd pick a topic, like the fresh water tank, and just read whatever threads we could find dealing with that topic. You can pick up a lot of knowledge just reading the threads. When you have a question the people here are great at helping you out too. Welcome to SOC!
Matthew and Lisa
TT: '02 T-2363;
TV: 2012 Ford F-150, 4x4/Off-road, 5.0L V8, "Big Gray"
Reese Straitline w/ dual cam