Turns out someone from management assigned us to that training and that’s just the standard mail it sends…

I always just wait for a follow up email from whomever assigned it or ask someone who would know if that’s legit

we got a mail that we could log into our account on microsoftonline.com.

Oh just wait until you get someone legitimately using a domain.onmicrosoft.com email address. Microsoft uses the onmicrosoft.com domain as a placeholder for unlicensed users and domains which haven’t been fully setup yet. Which is funny since they own the .Microsoft TLD and could move everything to .Microsoft domains to show it off but they choose not to for whatever reason