Not all tar.gz are the same.
I prefer wizards kind of installation. Is 'vpackager' such utility? I could not find it in the GSlapt pacage manager, any pointers in this regard?
No vpackager is for making Vector packages from source. You can try
midnight commander or pkgtool.
There are overwhelmingly many directories under '/' Any guide kind of thing to know what for each directory is meant for?http://www.tuxfiles.org/linuxhelp/linuxdir.html
Applications installed under root would be available for all other logins on the same machine?
Yes, if they are designed to be run as a normal user.
There are some things that will help in your transition to Linux.
1. Linux is different from Windows in file structure, user permissions
and philosophy to name a few. What you learned from Windows
will not apply to Linux.
2. Google is your friend. When searching it will help to use linux before
3. Reading is required. Linux will return what you put into it. If you spend
time reading and learning it will pay off in an easier user experience.
4. There is a learning curve be prepared for it. When you first started using
Windows there was a learning curve, expect one here.