I don't know myself, but if all else fails and you can't find out how, you might be able to call up your post office and ask. They're bound to know how.

From where will you be sending this? If it's from within the EU, you don't need a customs form, otherwise probably yes.

In any event, the advice to go to the post office and ask is good. They (obviously) know about such things, and answering questions like that is part of their job - so I don't think they will think poorly of you because of this. :)

I often times do not know how much to put on the package even when shipping within the same country as different weights have different costs here. So I just don't put on anything and just let them weigh it and print the nessecary stamp themselves. It is their job, they handle it everyday, so it should be no problem for them. And we customers have other things to worry about, so you really should not feel ashamed having to ask.

Having done this, here's a handy guide:

1 - get package, make sure it is securely taped so it won't tear open.
2 - make sure your address label is very clear and easy to read
3 - go to post office
4 - the post office will have forms for international shipping, you will need to fill out the address again, a return address, what is in the package (it can be vague), and other details
5 - take form and package to the front desk

You'll get walked through the rest of it.

OOHHH THAT HELPS A LOT THANKS TUCK ;;;;

I've done this too, it's a surprisingly simple process. You'll want to know some details like area code, province/state, etc.

Sent something to the UK a while back (from Murica) and basically, I got a customs form from them, filled it out with like the weight of the package and contents and everything, and gave it to them along with the package. It may depend on where you go but if the form needs to be attached they'll probably take care of that for you. Also I didn't really fuck with stamps, I paid the shipping price, and any necessary labels they just gave me. But yeah, like other people have said, there's really no shame in asking someone who works there when you get there, it's their job to help people wrap their heads around the whole thing and you won't look like an idiot. oouoo _{((EDIT: Didn't see WolfintheWalls' comment until I'd hit 'reply', but, yeah, listen to him, he's spot-on.))}

The most sure-fire way for this is to go into a post office and ask. Or call a big, central office.

In case the person you talk to doesn't know, ask them for someone with more experience, or even for them to ask out loud if someone has done it before (in a big office, someone will know at least a bit more), say you're going to ship something a bit heavy and expensive and that you'd really, really rather not have it get lost or returned.

And yes, as someone said before, if you're in Europe, almost zero chances of needing complicated forms. Otherwise, expect to have to give at least a short declaration of what you're shipping and its value.

I recently sent a package into the US and I can highly recommend you to GO to the post office. They will give you all the information you need about customs, stamps and you can pay the delivery there. That's what there job is, you will not look dumb.