Best way to get cheap or free skins ?

there are too many websites out there (gambling websites) that you allow you to get free credits at first and to gamble with it, that way allow you to gamble or get some cheap skins (be carfull theres too many scamming websites)
or try to exchange on this site : steambroker.com you will get alot of cheap skins of any games plus games as well trade and make a profit.
good luck