Just throwing in my tuppence. I've found for a cheap stove, you can't beat the hexi stove, load of people don't rate it but if you want a cheap wood burning stove it does the job. You can burn finger sized sticks that are enough to boil a brew / ORPs. Just go to a local training area, (Call before and check, if you hear banging stay away), go to wood blocks and there should be some laying about.
Ollie
Ollie