Latest questions about "apple id"

My iPad keeps running me in circles. My Apple ID is wrong (finally figured that part out). But, I can only get so far and it asks me to again change my password which puts me back to square one.

Can I get HP Easy Wireless Setup App if my Apple ID is on the Russian Store? App Store informs that the app is only available for US registered users.

I only can add apps with Google Plus. Is it possible to synch with my Apple ID?

My iPad is currently linked to an Apple ID, that I don't have. What can I do to get past this problem?

My ID was supposed to be changed to a different e-mail account, but apparently I'm still on the old one, even though I was e-mailed that it was.