Okay, so, you were linked to two different sites, each of which have thousands of free icons available - I'm pretty disinclined to believe you actually investigated these sites in any depth, and just want other users to send you to the good ones. Two tips - first, Google is your friend. Learn how to use it properly (avoiding words like 'free' in the query and such) and what good search results look like and you'll be on your way. Second, finding free resources like icons means a lot of browsing if you're at all picky. You were linked to resource sites, both of which are very useful, so now it's your job to do the browsing.