Hello guys has anyone picked up a parcel from post office??
How does it work say i wanna order something and get it sent to post office
It depends on where you live. Here you can't mail order and have it shipped to a post office for yourself.
You basically have two options. The first is to rent a PO Box. This isn't really practical for just a one time use kind of thing, because it's around $60 for 6 months.
The second is better but requires you to have a home address. You can request a vacation hold on your mail, which basically means they keep all your mail for you at the post office instead of delivering until you cancel the hold or pick it up. Maybe you have something similar in the UK?
Other shipping methods often have places where you can pick up a package in person.