DosTips.com

This is an archive .7z of Benny Pedderson's website

Here is a link to the archive file
http://ge.tt/8xvBUn6
pederson.7z It's only 2.5MB

the links to his site have gone down
http://users.cybercity.dk/~bse26236/
http: 2dos(dot)homepage(dot)dk

You may want to save that pederson.7z file to be sure. it may disappear from archive.org.

looks like his site is back up..

that site is for ms-dos,

but if you want to know about CMD, I guess

NTCMDS.CHM is very useful (may be worth adding c:\windows\help to your path if it isn't already there so you can execute ntcmds.chm easily and bring it up)

and the HELP command rather useful..

and

http://ss64.com/nt/