Getting a USA Passport
 

You get a passport picture taken,

You send them the picture, documents, etc?

Not exactly sure the whole deal.

My biggest concern is that I wont get it in time, since I'm planning a trip to Italy from March 12-20 and haven't started getting it yet.

Go to your main post office. They usually have the necessary forms and can tell you what you need to do. If you've never had one before I'm not sure how easily you'll be able to get one expedited due to the government's paranoia.

it will take 4 to 6 weeks

all the info is here
http://travel.state.gov/passport_services.html

dont wait so long next time

only certain post offices do it, some kinkos do it too. check usps.com to find the closest.

fuck that..you can get one in 4-8hrs

Find the next day service pass port service office, and make an appointment when you have your tickets.

Takes about an hour.

Look it up according to what state you are in ;)