Welcome. I've been running my G200 non-stop since January this year. Almost a year now. Things I've learned:
1. Keep it clean. Remove ash from the secondary burn chamber frequently, at least monthly and more often if you're inclined.
2. Burn the same type of wood you would use if you had an indoor woodstove. Split small and bone dry. A big chunk now and then won't hurt as long as there is a good coal bed. Keep a good coal bed in it.
3. Let it burn out every couple of weeks and clean ash out of the firebox.
I'm no expert but there are guys here who have run these things a lot longer than I have. I had a Central Boiler classic model before this one, and it is a totally different process (aside from the actual tossing in firewood). You also learn the burn patterns, smoke patterns and general behavior of the unit over time. For example, I have learned that if I feed it 4-6 splits twice a day (7 am and 5 pm), I get a full 12-hour burn and then some, to the point where after 4-5 days I have so many coals in the firebox that I can skip a 'feeding'. I also monitor smoke colors and patterns, to see if anything needs cleaning or adjusting. Normally there is zero smoke coming out of the unit, even at the start of a burn cycle. I will occasionally catch wisps of smoke (more likely steam) coming out of the chimney during idle, but it does not stink up the neighborhood like the old boiler used to.