first of all , please don't blame me for my advice to you, nobody has builtin knowledge. About your request I hope other regulars more skilled than me can suggest you good books. I can show you the road I followed having a good knowledge of batch DOS.
- Type help | more to get the full list of NT commands;
- Type the command code with the /? switch to get a quick (not ever friendly) guide.
Be aware NT batch commands are compatible with DOS ones but far more powerful. Read the posts in the Forum since there are gurus you can learn a lot from as Judago, klint, Razor2.3 and Mechanix2GO.