As alephnerd has pointed out elsewhere in these comments, hoping for "a guide" to a process that's nearly trivially researched on one's own is almost begging to be rolled.

(FWIW, in my online threat model, "30 second" explanations have a default weighting of malicious, and I'm guessing the cutover occurs somewhere around "3 hours"... Of course, you didn't take longer than 30s to read the previous sentence, so don't forget to double check my claim before relying upon it!)

get decent grades, apply as an international student to Uni's on the undergrad or grad level, secure loans, graduate.

once graduated, most places offer rubber stamp visas to keep international grads; use that, get a job locally, and then hang out until you qualify for residency / green card.

not esp. difficult, conceptually speaking. the devil is in the details, but its impossible to write a guide for every country and Uni. like Ontario vs. Alberta will be different, vs. California, vs. the UK, etc. etc.

I’ve seen this book recommended, but have not personally read it: https://www.unshackled.club/book