there's an app in the Windows Store from ComiXology called Comics:
Comics app for Windows in the Windows Store

Click image for larger version

Click image for larger version

if you have a vertical monitor, you'll love reading comic books on it. just looks beautiful.

people are slamming the servers so be patient. right now, it's hard just to log into your account.

some details:
You Can Download 700 Free Marvel Comics Right Now

right now, between now and 11pm ET on Tuesday, March 12, you can download some 700 first issues from Marvel Comics for free.

And.. it's legal!

The ComiXology Comics app for iOS and Android is offering 700 Marvel comics as part of a Marvel promotion announced at this weekend's SXSW festival in Austin, Texas.

The roster of free comics includes 22 first issues from the new Marvel Now line, 46 first issues of various Avengers comics, 11 Fantastic Four first issues, 17 Hulks, 56 Spider-Mans, and even 118 X-Men comics. Where to start? It's a bit overwhelming, to be honest.

How about... Daredevil Vol. 3 #1 and Hawkeye #1. Both are in the "Marvel Heroes" part of the promotion.