I would like to get a introduction into modding ICW and BG1.

I generally want to learn how to create mod´s mostly for IWD 1 and BG1 (maybe even 2), but mostly IWD. Creating Kit´s, Map´s, AI´s, Dialog and all that kind of stuff. I already know basic coding but lack the knowledge on what software i should take and how i have to use/install it.
So my first question would be for what specific aspects i have to use what specific software.
From what i have read i need "NearInfinity" as a browser, "WeiDU" for Dialog and "DLTCEP" for basicly everything.
I would also like to know where good tutorials can be found or if there is anything else thats important to know.