So I have created a few examples in DirectX 9. I've created my own full 2d engine based on DX 9 and now I wanted to start learning 3d. My goal is to become really knowledgeable in the field of creating games in DirectX but I'm now honestly getting confused due to the rapid development of whole game industry, libraries, tools etc and I'm not sure what should i focus on? Currently I'm windows 8 user and I'm trying to learn DirectX 11 from this site: http://www.rastertek.com . There are a lot of technical aspects of initialising DirectX 11, which are not explained actually anywhere and here's my question:
Do all Pros remember and understand whole this procedure of getting DirectX to initialise and other actions? Or is it more like paste + copy? Cause actually it seems to me to be completely impossible to remember all of this...
If I wanted to become a part of some game company in the future should I be well informed in DirectX 9, 10 or 11? Or maybe since it developed so much and still continues should I get familiar with sth like XNA?