To change logo, information site or per page in font-end you can edit file config but Phanbook have provide the UI to configuration easy
First thing you need to login your Phanbook dashboard then go to Setting>>Reading. Next you just change number for per page which you want it
Similar the above you just go to Setting>>Logo then select the logo you want to update
Goto Setting>>Google(http://localhost/backend/settings/analytic) then click button Authentication it will redirect to other page, so you just authenticated and copy token for Phanbook