I still prefer to hold a (physical) comic in my hand...but...you can't beat the convenience of digital books...especially the FREE ones:

Marvel Comics | Marvel Comic Books | Marvel
http://marvel.com/digital_comics/list?isFree=1
Browse and purchase Marvel digital & print comics. Subscribe to Marvel Unlimited to access thousands of digital comics for one low price!


I personally enjoy the older books in digital format...cleaner pages & crisper colors without the musty smell

Check'em Out.

Enjoy.