This one is an excellent description of critiquing photos.
http://www.lightstalking.com/critiquing-photographs/?utm_content=buffer625a2&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer
Check to see if you have any of these bad habits.
http://digital-photography-school.com/what-are-your-worst-habits-as-a-photographer/
This is a great video that takes you into a traditional dark room and shows you how the old-fashioned processing techniques that predate Photoshop were done; dodging, burning, feathering, etc.
http://petapixel.com/2015/02/26/these-are-the-darkroom-techniques-photoshops-tools-are-based-on/
From one of the masters of Lightroom, Scott Kelby, comes "10 Things I Would Tell a New Lightroom User"
Here's the link to #10 but at the bottom are links to all the previous tips.
http://lightroomkillertips.com/10-things-tell-new-lightroom-user-10/