How many training institutions are there in the linux industry? what are the best training institutions in Beijing?

How many training institutions are there in the linux industry? what are the best training institutions in Beijing? -- Linux general technology-Linux technology and application information. for details, refer to the following section. How many training institutions are there in the linux industry? what are the best training institutions in Beijing?

I am a newbie. I came to Beijing after my junior college. although my current job is quite stable, I don't like it very much. I always wanted to work on the Internet, I want to develop to linux and network engineers,

However, if you go directly to the network, you will learn a lot less, and you must understand linux and servers;

Then, like experienced predecessors, I would like to introduce the development direction of this industry;

Which training institution in Beijing is better ???