I have a similar insert (made by the same company). It's a bit of a learning curve at first, so don't get discouraged. Here's some advice, in no particular order.
1) Don't even bother trying to burn wood with a moisture content of >20 %. Use those compressed sawdust bricks for this year if your wood ends up needing more time to season. In the meantime, try burning some 2x4 scraps, pallet wood, etc.
2) When starting the stove, aim to get the firebox heated up quickly. Use lots of dried kindling, and starting the fire close to the door (which is right under the air intake) helps. After you get the swing of thing, try a top-down fire.
3) After the kindling burns down to coals, rake the coals to the front of the stove, then load the stove. Placing some smaller splits on the coals will help the wood catch on fire quickly.
4) You will see smoke out of the chimney when starting a fire and when adding wood. Between those times, you shouldn't see smoke. If you do, your wood is too wet and/or you closed the air down too soon