The good thing about old cRPG is that everyone back then was new and everyone had fucked builds that weren't minmaxed. With all the nerfs and patches and game changing patches since, the old players really learned how to squeeze lemonade out of rocks by exploring every tiny thing that gives you an advantage. For you, this knowledge might seem effortless and common, but that's because you've developed so far in terms of skill level and repertoire that every move and feint have become an extension of your playstyle.
For a new player, all of this is going to be like climbing a waterfall. Unless they read up on the guides we have on Wiki and on the forums, but 90% of the time, new players jump into a server with their peasant and die and die and die and die and then they get fed up and leave the server.
So what to do about this? Nothing. Trial by fire is by far the best way to learn, and if you don't want to learn, cRPG isn't for you. However, if you ask for help, it will most likely come. Read wiki, read guides, ask questions and salvation will be in reaching distance.