Yes. With an E ticket you can do it.
Yes this can be done online or at a self service kiosk at an airport.
If you are not getting your boarding pass at the check in desk you get it on line by logging in to your airline, putting in your flight details and password and following the instructions. Not all airlines allow you to do this. Not all airports allow you to do this.
If you print a boarding pass as a PDF file then you can e-mail it to someone.
Aer Lingus will send you confirmation of your booking with a number. You can either use this information at the check-in desk to obtain your boarding pass. Alternatively, there are machines where you can usually print your boarding pass using your confirmation number, passport or credit card information.
When purchasing a South west airline ticket the boarding pass isn't available until the time of your flight. A passport is required at the time you check in at the airport and the boarding pass will be obtained.
Up to the security check point where they check your boarding pass
Before going to the airport he printed his ticket and his boarding pass.
I have one as I work in an Airport. Basically it is your Airport Staff I.D badge. It has a chip in so it lets you get to restricted areas of the airport and also beyond security to duty free and boarding gates e.t.c. Having an airside pass lets you go to these places without being a passenger and having a boarding card.
There could be numerous reasons, contact ryanair directly and explain your problem.
No, you do not. As long as you have your boarding pass (which can be printed online at home or at a kiosk in the airport) you do not need to go to a check-in desk.
If you lose your boarding pass you can normally go to the gate and have them check your name in the system. If you lose both your passport and boarding pass you're in trouble.
They scan your boarding pass because, after 9/11, you cannot go through security to the gate area unless you have a boarding pass.