How I can play Ps1 game on Pc . . ?

Can somebody help me please..
I want to play Ps1 game on Pc..
And my friend told me to download ePSXe 1.7.0..
I've already download it..
But I don't know how to use it...
Can someone please guide me??? :'(

There is a tutorial in the Tutorials section.

or use psxfin its really simple to use