Digital comics

Dears,

I have couple of questions and i try to search for an answer but no luck, and i hope some one here know the answer.

How can I know the comics I'm looking for is got digital version or no ?
How can i know the status of each issue if it digital/Scan/ not scan ?

thanks in advance.

All modern comic books except for DC's Walmart exclusives and Archie's Marvel digests should have digital editions. That'd be everything from the past decade or so. Back catalogue gets added to Comixology and Marvel Unlimited all the time.