Get a flue thermometer. We have a stovax one from Amazon. They fit with a magnet to the little bit of exposed flue above the stove and tell you whether it is operating at the right temperature. Too hot and you can damage your stove (our glass has bubbled where it got too hot) too cold and you're not burning your fuel efficiently. Needs some practice to get it the control right but it will help you maintain your stove and they're expensive items so worth looking after.
We have a Woodwarm which are handmade in the UK and very highly recommended by several installers (and our chimney sweep).
Multi fuel stoves need an air inlet below the grate for burning smokeless fuel. We were advised not to put coal on ours because it burns hotter and more explosively than smokeless. The top air inlet should be closed. For wood, the bottom inlet should be closed (except maybe a little blast to get it going) and the air should come in from the top.
If you're room is small it will get VERY hot so you'll be leaving the room door open. Make sure you get good advice about the size you buy - its as much about the size of the space you're heating as about the size of the space you have to put it in.
Enjoy being toasty!