how much has the syntax changed over the versions?

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C++/CLI

I guess what i mean by this is, version 6 for example is the code still usable? i have a ms vc++ 6.0 book, is that still an ok learning reference to pick up the basics? or have things changed so much i would be better off getting the new book? i have been working with standard forever and clr/cli is something i would like to look into now. its a little confusing because the way it is written the CLR is the same, which im sure it is being a runtime, but if it is really the same you could just pick up a visual basic book learn to program the events etc and that would be the same commands for any of the languages! i hardly see that happening?! what this tells me is if i already know C++ and want to start making CLI projects all i have to do is learn visual basic??!! i find it hard to believe that is going to work!? thank you and sorry for the newbie questions.