Teach me how to buy a plane ticket online, I have never done it before, and tell me about the entire process from buying the ticket to boarding the plane.

The next Ctrip website has train tickets and air tickets (you can usually get a discount if you buy tickets one day in advance). After purchasing your tickets online, arrive at the airport two hours in advance of the designated time. Find the automatic ticket machine and use your ID card to select a location to collect tickets. After getting the ticket, take your luggage and go through the security check (sometimes there is a long line at the security check because there are so many people.) After passing the security check, wait for the flight in the waiting room. When the time comes, there will be announcements and service personnel, queuing up in advance to arrange boarding.