Tips and tricks for a great composite

10 Things You Need to Know About Compositing in Photoshop

http://www.graphics.com/article-old/10-things-you-need-know-about-compositing-photoshop


Free backgrounds and Tutorials

http://compositeplanet.com/


Composite Tutorials

http://planetphotoshop.com/creating-a-compelling-photo-composite-in-adobe-photoshop-cc.html

http://www.apogeephoto.com/feb2015/creating-composite-images-in-photoshop.shtml