If i am taking reference from a website how can i enter website in Endnote X7 or X7.1 and how can i use in-text citation in Endnote X7 or X7.1

Can somebody tell me step by step ?

Need more info.  You mean to reference a web link?  Or from a database, or from a publishers web site, or from Google Scholar?  Each of these would be different.  – then the citation side 

On a mac or on a PC.  What word processing program?  

I would start with watching a few of the training tools available on the “Endnote training” site for example the link below is How to use Endnote in 7 minutes.  – there is one for the Mac product as well.