Now that the network is so developed, there are many online trainings. In fact, many of them can be studied at home. It depends on what you are interested in. You'd better learn what you are interested in, so that you can learn quickly and you won't feel bored in the process of learning. There are paintings suitable for studying at home, such as sketch, watercolor painting, gouache painting and Chinese painting. , and software, such as Ps C4D MAYA, CAD, etc. Learning writing, network marketing planning, etc.