Step 1: Look over your abilities.
Step 2: Look at how they interact with one-another, and their effects.
Step 3: ???
Step 4: Profit!

But seriously, it's not that hard to figure out how to play your class for yourself. Just keep in mind what abilities are only useful in soloing, which ones would be useful in a party, and what abilities combo off of what other abilities. Ta-da! You now have an idea of how to play your class!