Here is a list of powershell commands that have come in handy for me:
Check if an account has expired:
Search-ADAccount – Accountexpired | FT Name,ObjectClass -A
Check if an account is disabled:
Search-ADAccount -accountdisabled | FT Name,ObjectClass -A
Check if an account’s password is set to not expire
Search-ADAccount -PasswordNeverExpires | FT Name,ObjectClass -A