tl;dr - being a newcomer is brutally hard.
No one who matters is gonna give you grief for being a Yankee, just don't bring it up in every conversation or try to explain politics to us and we're good. We all know plenty of Yanks. Many of us have family on the other side of the border, and more than a few friends, co-workers, etc.
The rest of this comment is for anyone scrolling with a similar question as you, so if this doesn't apply to your sitch, just leave it. And good luck to you.
The immigration links (ircc, canada.ca) are the first things to check out.
If you have any people up here, distant relatives, organizations you belong to that have chapters in Canada, acquaintances you met at work, etc, today's the day to reach out and say "hey, hope you're well." There's whole economies that thrive on people escaping crisis, and having real people here you know you can contact if shit really hits the fan during transit is absolutely a lifeline (like if the grifters and other coyotes get their claws in, you end up in jail/detention, etc). Brainstorm and make a list of phone numbers.
You mentioned being gay - so definitely check out any queer-friendly community centres where you're going. 519 in Toronto for example, if that's a city you want to try to live in. They're good folk. Show up for the information, stay to build your community here.
idk your financial situation (please don't tell me), but that's the hardest thing about escaping here for most people. Everything is money.
I can only buy 1/2 the amount of groceries I could get back in 2020, I'm paying the same amount, and I'm a pretty savvy shopper. The big market grocers are completely out of control. In cities at least, local small grocers are actually more affordable most of the time, so shop the markets, ignore Loblaws, etc.
Since 2018, the housing market has been pretty much completely deregulated in practice. Started with a few predatory Provincial mandated changes, and the free hand of the market has fucked it up for the rest of us. We're fighting for affordable housing as much as we can, but it's not an easy landing here for the average Jo/sphine, to say the least.
I know people that've been living in shelters for 4+ years, and many still line up every night. Homeless shelters here can be really unsafe - you don't want to get stuck there. Similarly, I know people with 2-3 jobs living in slum conditions because they get trapped paying 1000$ for a bunkbed in a basement with 10 other people. If you can hook yourself up with a place to be before you get here, with a real person you didn't meet on the internet, of course that's best. Many don't have the time or contacts for that though.
Gotta assume any under-the-table immigration help you may get offered is absolutely a scam - there's a massive human trafficking economy, designed to leech the last dime out of your pocket and leave you frozen in the woods on the border if need be. They. don't. care. I know lots of people who left their home countries relatively wealthy and were tapped in debt to heinous dudes by the time they got here. I know folks who've decided, "fuck it. I can live in soul-crushing poverty here in Canada or I can live in soul-crushing poverty where people at least speak my language" and gone back to active war zones rather than try to continue surviving here.
It's a brutal decision to make. Many people who absolutely know how dire it is still come though, despite everything. Even when it's "just" for the laws we still have protecting us from discrimination based on race, id, etc. I have friends and neighbours from Afghanistan, Iran, Russia, Eritrea and on and on, who no matter how hard it's been getting and staying here, are still relieved and proud to call this place home. It's all about getting involved in your neighbourhood communities once you land. Show up to volunteer and don't isolate yourself.
None of this is encouraging information, and I'm sorry for it. But the main thing I know from the "newcomers" in my life, is the image of Canada as a safe place to land where you'll get free healthcare, a cozy apartment and a decent regulated job (and that IS how shady immigration consultants sell it)? They always say, "I wish at least 1 person had told me the truth before I came here."
If you know these things and still think you have to or want to try navigating it all, Welcome, for what it's worth.