This thread will be used to inform the XII playing rabble of your favourite training spots in the game - accurately. The reason for this is because I, like everyone, sometimes wish I knew a good place where I could rack up a bitchin' combo and really rake in the munnehs. I think a layout like this would be most useful (I'll use the good old Lhusu Mines as an example):

Level - 10 to 20

Location: Lhusu Mines, Bhujerba
Description: The second bridge, full of skeletons.
Loot:: The most useful loot gained here is the Bones. Can't remember the proper name. They sell for 193, I think, and you can get them in large numbers. Add to that the other loot, like Dark Stones and Magicite. They sell for less, but still aren't to be scoffed at.
Highest Combo: Highest I got was 86.
Reason for training here: After getting a big combo, i.e. 40+, you'll probably be raking in the Bones. I usually left the Mines with around 50/60 each time which, when sold, left me with almost 10,000 gold. Also, the skeletons give out a fair amount of exp. so it's fairly easy leveling too.
Hints and Tips: It's fairly simple. Just hack your way through, rinse, and repeat. If you're nearer to the lower levels then I suggest you walk onto the bridge till one or two skeletons appear, let them target you, run off, and then attack. This will ensure you don't get swamped by enemies.

I guarantee I've missed something, so feel free to add your own sections, or to write your Spot up in whatever layout you like. That was just a simple guide. Also, don't hesitate to add extra information to whatever someone else has written.