It is called a nose piercing.
A nose piercing can usually be changed after one week of having it pierced. You can try out places like Piercing Pagoda, Claire's, or even Hot Topics to find a nose piercing - depending on your friend's style.
Something like how a stuffy nose affects breathing through your nose.
Yes, you can use ear piercing cleaner on a nose piercing.
nose bleeds can burn and make new nose peircings sore but it doesnt make a difference for a healed one
your nose piercing should effect you in no way when you eat.
no prodigy doesn't have a nose piercing
My nose hurt worse then my tongue. However, the first week of having your tongue pierced sucks!
yes because it needs to be clean if not you need to get it cleaned
Yes you can tan with a nose piercing, but I wouldn't recommend it. It dry your piercing out and cause "crusties".
Having a foreign object implanted in the nose, when you're inclinded to irritate the surrounding tissues (by wiping your nose, getting the wound wet which may lead to infections, etc.), will of course cause problems. I would suggest you consider treating the sinusitus, then think about the piercing.
there are 3 different types of nose piercings. a nostril piercing, septum piercing (through the septum of your nose), and bridge piercing (placed on the upper bridge of your nose)