Well, I'm from Russia too - and that's totally not a problem to read Tor's basic documentation on torproject.org website having just 8th grade school english level, so don't worry. Helping others without technical knowledge is impossible in matters like this: you have to see the technical background for every problem you're asked about, and that's a ...
just 3 steps:
Run a VM/box dedicated to Tor
Route all the rest of the traffic through it - except the Tor node one
Do not confirm your phone, e.t.c... = keep a digital hygiene up
And it will work for sure
Yes so far you are correct.
If your only threat model is your university, you may use VPN/ssh tunneling whatever, which may be faster than tor and wont use so much resources for such a simple task.
If your threat model includes more than that, you might need tor.
This is the result of poor website's web server and/or CDN configuration. Some CDN's do have an option to deny Tor exit node IP's(the IP the website can see as a request source) - the same settings can be enabled in WAF like mod_security. That's how it happens - so you can not change this by an action from your side if you're using Tor as an exit to the ...