quick question: i am located by 2 inactive domains. is it wise/advisable/even possible to somehow annex those lands to my own domain or to take over that domain somehow? if so, can someone please instruct me how? keep in mind that i just started and dont have much except setters.
The moment the lord of a domain dies the domain enters a 7 day lockdown. During that time only the formal heirs of that lord can claim it for themselves (which are usually that players alts, though if your character is married to another players character then he/she is also a heir).
After those 7 days everyone can claim that domain.
If those inactive players near you have been dead for 7 days move your character to their square/marketplace and hit the claim button under the lord-command tab (the 2 shields). It takes 10 to 30 minutes (depending on your ceremony (and I think management) skill).
If those inactives are not dead yet you'll have to murder them yourself, to do that move some of your units to the same area as the lord of the domain, then drag and hold them over the lord until a little sword appears in the units picture.
Lords are kinda tough, make sure you have enough units, or at least a well equipped soldier.