You need, I think, 200 AC to get some space. or get 4500 coins (or something like that) and give it in to use your bank. Then you can store your stuff in it.
No.
kill them!
You can get 20,000 gold in AQWorlds, by killing monsters, selling items and doing quests.
No you cant.
to get items by drop you have to just battle monsters till you get the drop
codes that unlock special items in the game
You can't lose your items in AQWorlds, except if you drop them.
You put notes in the bank just like any un-noted object. When you take items out of your bank, there is an option at the bottom where you can choose to take the items out in noted form, or not.
you shall kill 16 items you shall kill 16 items
take them out of your house, go to the house shop thing, and sell items.
Probably. Check the AQworlds wiki.
You can not put banks in Player Owned Houses. You can how ever hire a butler, he will fetch certain items from the bank for a small fee.