Removing previous data from bought site

[letterkoning]

Hey, I bought a second hand site from a friend. These pages contain some personal stuff and codes. I know how to change the html code but there might be some hidden data. How can i find it easely or delete it. How do i know that i get all the hits made thru clicks on my site and not the previous owner.

Thanks already

 

[angelwatt]

Try the delete command. Just remove everything from the folder where you have the web site files uploaded. I'm not sure what other hidden things you think exist and if you're worried about something in the HTML code or on a web server.