What are the ways to travel abroad?

There are several ways to travel abroad: one is to join a tour group organized by a travel agency, which has the advantage of simplicity and convenience and the disadvantage of less freedom; The second is a completely self-help tour. You can apply for visas, book air tickets, hotels, and arrange your own itinerary. You can get all kinds of information through the website. The advantage is that it is customized according to your own needs. The disadvantage is that it takes a certain amount of time and professional knowledge, and the cost is unpredictable. The third is semi-self-service. There are some services here, such as air tickets, visas, hotels and so on. They are all booked through travel agencies, and some of the contents are arranged by themselves. The advantage is that you can make full use of other people's professional knowledge to serve yourself, but the disadvantage is that the self-help part still needs considerable travel experience. In addition, we should also consider the difficulty of applying for a visa where we want to go, whether to allow self-help travel, and our own travel experience and foreign language level.