A question for computer hardware engineers

So I graduate this year! & I plan on going into the Computer engineering field more specifically hardware. I have a some questions for anyone that is in the computer hardware engineering field. I would like to be as far ahead of my class mates as possible

Questions I want to have answered:

What are some of the best jobs in hardware engineering ?

What type of hardware engineers work on processors?

What type of hardware engineers work with medical technology?

Should I go for my masters in hardware engineering?

I want to start on the management side of the technology field what degrees would help me get at the top of management after college ?

Are there any classes that I could watch for free to get ahead in my courses ? Provide link

What are important coding languages I must learn ? that I can start on now

Are there any math courses that will prep me for the field?

Any books that I could read on a daily basses regarding the field ?

Side note: I might sound crazy but I don’t look t the world of technology the same as your regular person. Some people have dreams of finding a good job and that’s it... i want to leave a mark on the tech industry for a life time. I literally write down ideas on some of the big problems in the world and wonder is there tech out there that could solve them. You might see a square but I see a circle. Would love for somebody in the field to be my mentor!