How do i play it?

I got counterstrike and esf but esf has no where to launch itself. I can play counterstrike but there is no thing that says mods or anything. How do i launch? Do i have to download an update for it? please help!

Do you have a retail version of CS? If so, there should be a button that says customize, click that and you should see a list of mods. Yes, you will also need the current version of CS, i don't know what that is though sorry, I don't play CS.