I'll just talk about the difference between big companies and small and medium-sized companies. Planning internship treatment, their staff will give you a reasonable price, as long as it is not too much, it is acceptable.
As for study and experience, working in a big company is a radish and a pit. Learning is slow. There are clear rules and regulations and management systems, and each post will be assigned a special person to do it. Then your contact time is very narrow, and promotion is not easy, but the project may be guaranteed, which is an advantage. The biggest drawback is that there are many slackers who play soy sauce.
Although small and medium-sized companies are not as big as big companies, they have abundant liquidity. But there are many things you can learn, from program to art, to planning and communication between program and art. Many chores may be arranged for you from time to time, and your contacts will be wide, so you will learn faster and accumulate experience faster.
Generally speaking, big companies have the advantages of big companies, and small companies also have the warmth and struggle of small companies.