Is it difficult to travel abroad? What documents are needed? How much does it usually cost?

It’s not difficult.

First of all, you need to apply for a passport, then find a travel agency with good credit, and sign up for a group tour based on the travel agency's overseas travel routes and your interests (in your case, it seems that you have no overseas travel experience, so it is recommended that you join a group tour) In this case, the visa is issued by the travel agency, and you only need to provide the information required by the travel agency (requirements vary according to the country you are going to). Most European and American countries require company certificates (copies of business licenses, employment certificates, leave permission certificates, etc.) and bank deposit certificates. (Amount requirements vary, generally more than 50,000 yuan). The requirements are relatively simple when going to Southeast Asia and non-developed countries.

The cost depends on where you are going. A few thousand yuan is enough for Southeast Asia, and over 10,000 yuan for Europe and Oceania. In terms of cost, it is recommended that you compare several companies and do not join a group with a low price, so as not to fall into the trap of shopping and having too many self-funded items.