Just have fun
I guess I started 'bout the same way, except I didn't start with such a nice rod.
All of the info is excelent, but you should rememer one thing, ... The rod you have now will do for all but the biggest of big game fish. In the salt, you'll see some shortcomings, but for EVERYTHING else, you'll be fine.
Lighter rods are fine, but they also have limitations. If it's windy where you fish, you'll appreciate the 8wt.
7's and 8's are standard for me from everything from sea run trout, to walleyes, to pike to Atlantics.
Just get out, practice lots and have fun.