so mohammed.....what kind of approach do you need??

hi mohammed, when grasshopper first came out (it was called (expolicit history) i asked david rutten the same question....how to start.
he said there is no starting point, no tutorial.
it depends on what you want to do with it.
i would recommend to download the primer pdfs available on the blog, to get familiar with the interface.
gh is a very logic software (at least for me)...the workflow that i have is.
-first, bes sure what my problem is, draw it by hand....few conceptual drawings.
-then see the way, how this could be done in rhino by its own(you said you know cad...right....then you know rhino.....see tools-option -aliases-setup the same aliases you have in cad, some wont work....but theres a bunch that will, such as copy, trim, move, line , polyline, extrude, fillet and so on)...gh takes rhino and makes automatic-recursive operations with it, that you can change and adapt endlesly.
-then identify what componets you need to use in gh to achive the same tak....say on step 2, you drew a line with even point sdv....so in gh you will do the same.
i hope this works for you as it has for me ....so far...
share your ideas in the forum, its a very good place to get d}some feedback
best

Hey.. seems like we are put up in the same building!!!!