Hiya....enjoy your new adventure!!
We have found the undernoted very helpful
Aldesur in Arboleas - for general household items such as batteries, tools manual and power, extension leads, cutlery, plates, paint and equipment, wood for building not firewood, they have small selections of lighting, kitchen equipment, pet supplies etc etc...staff are very good, knowledgeable and are bilingual.
You can also use Amazon. If you are not in the campo you'll likely get delivery straight to your address...if you are then there are a few post box shops who will for a fee take delivery for you. We have had to do the latter as noone can seem to find us...lol. Although IKEA, online order, came up trumps and found us.
Getting a gas bottle and a portable gas fire may be a priority for you...although there may be some empties at your property. You can exchange orange at Longo garden centre and silver CEPSA ones at the petrol station of the same name....we found getting a contract for a further CEPSA bottle easy.
On the spot queries can often be resolved by asking on the Albox Chatter Facebook Group which you may have already found.
Good luck and enjoy the experience
Jane and Paul