This can be done in a few ways, depending on Your wishes. It can be in Word or Excel document or something of that sort. If You need just a few informations from a website, then I would prefer Excel, if there is a need for larger informations from a single site, then it would most probably be better in Word or some similar sort of document. Work should not be that difficult but it depends on number of sites that need to be visited and how much info do You need from them.