Though I would share some cool tutorials I found. This place has got some pretty boss tutorials made by pros [link]
you can download them in pdf form
Also found some resources. Lots of people ask me where I get my brushed and tones and what not..I don't actually remember where I got the tones since I got them 3-4 years ago and I make my own Photoshop brushes but I did find some cool stuff while browsing for new stuff.
Comic book text [link]
There are lots of great brushes right here on DA. Here are a few of my favs;
Also love all these brushes [link]
Gesture practise [link]
and lastly..textures! for all your free texture needs [link]
And if you want references for drawing bodies, objects, go to the Resource & Stock Image category. It has got pretty much everything you will ever need. Also don't forget to credit.
If you know any other great resources that you would like to share with other people, link them in the comments and I will put them up here
Courtesy of Anomalies13 who has put together a very thorough and helpful resource journal here [link]