Alma usernames usually look like firstname.lastname, but some variances exist because of duplicate names, nicknames, and name changes. For your username, please reference the Account Activation email from notifications@getalma.com, which you would have received after signing in and setting your password the first time.
When logged in as a parent, your dashboard will always display the academic calendar for the current week so you'll have insight into special events, non-school days, or emergency closures. You can click the calendar icons to view the full school year.