I'll try to help a bit with the answers.
The only PTO attachments are auger, mower, tiller. You detach the hoe to use any of them, but good idea to leave it off unless in use, and then with care because it's a small machine for having a loader and especially a hoe. There are non-PTO rear attachments like blades and gannons. I wouldn't get a quick-attach, at least not at the outset.
Get a manual for it (and a supply of filters) at a JD dealer. For instance, changing the hyd/trans fluid on a Yanmar involves a special fluid, knowing the drain ports, and finding/servicing the internal screen filter.
Take it easy; it's versatile and well made but is not an excavator. Keep it in 2WD unless there's slippage.