Wanted to Remove any Installed softwares ?

I Have seen many people who install softwares and after installing it, they wanted to remove permanently , for them i will give some tips to remove softwares from your pc's Just go through this.
In cmd type regedit and follow this process
HKCU\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
It is for educational purpose only before removing any software you need to Know complete idea about that software. so that you could not remove any legetimate one