Equipment is repaired at any armor/weapon shop. Pbinfo addon, I believe, has the option to autorepair.
As far as space goes, you can't buy it. Can only rent it. Well, technically you can buy the chests to store stuff, but there are other ways of doing it
1) Learn what to keep and what to toss. Most stuff you dont need, just need to figure out that you dont.
2) Hire Housekeepers. Each has 10 storage slots and 10 equipment slots. They have lots of other benefits, learn about them before hiring.
3) Bank space, chest space, and most importantly, mule space (as in the storage alts) can help a lot.
As house goes, early in the process (Logar for humans, Elven island for elves, Morfantis for dwarves) you are given a chain of quests to familiarize yourself with the game. You get a house from one of the NPCs that the chain leads you through - namely housemaid. If your toon is not human, I recommend playing that at least to learn the game - human starting zone is organized a lot better than other races.
-- Rustyx --- 92R / 92S / 92M on Reni (Guild KnightShift). Yes, running the new FOTM R/M, cause I am not elf enough to be WD/S.
Oh, and people who have more than 3 classes are clinically insane.