Can we think of an address a mini-account, and is re-useable and disposable? Can we think of an address as a mini-account, and we can keep on using one, or we can use many to add privacy to our activities, and we can transfer or sell the bitcoins in it and make them empty and dispose of them any time?
No, you should not reuse addresses/treat them as a &quot;mini-account&quot;. You should create a new one for every transaction and not re-use old addresses.
Your wallet software will generally handle this automatically for you -- just remember to request a new receive address each time you receive new bitcoin, and it should give you a new address that you should only use once.