For work - what about H1B visa? Even if a company agrees to go through the process, he still has a slim chance of getting the visa, right?

I am just trying to familiarise myself to the process since I will be going through it next year.

You need a bachelors degree in order to get an H1B.

And more than that, not enough spots for everybody. Big companies are going to get most of them no? Especially for an intern, it is almost impossible.

No company is going to waste thousands of $ to hire an intern. Most H1B go to those fake Indian companies and Google etc.

As long as you have enough money to pay tuition without scholarships (and paying the non-resident rate)... sure!

Being sarcastic here, finding a job (or studying as an undergraduate) in the U.S. as a foreigner unfortunately has very little to do with skills. Unless you have something very unique that a company decides to seek you out for!