burn times

It's a tiny thing and needs a heat sensor, but I thought it would be fun to start learning to smoke with. It didn't come with instructions so my Questions: how long will this little thing smoke for, do I need to add liquid, and would you suggest I start with "little things" like fish, cheese, etc.

lump vs briquettes in uds Are there any big differences using lump rather than briquettes in my uds? I've only ever used briquettes sofar.Does lump burn hotter and for as long ? I'm trying the lump to start up to try and reduce startup smoke smells;some of my neighbours don't share my obsession...