Personal development within Digital Art is a long road with many different artistic and technical aspects to overcome. The one which I found troublesome was to bake a perfect Normal Map and the parameters that influence the result of Normal Map creation.
Whilst trawling the internet for information on Normal Map baking I stumbled across this gem of a video which goes into concise detail of what is required and how to set up the cage and what factors influence a usable map.
Further, excellent information is also available from a recent lecture by Andy Davies, exploring further into baking fundamentals, which can be found here:
I hope you too find them useful.