Hi

I posted few days ago I was new on forum and about to try bitcoin gambling sites as use betfair and the like and wanted to use my coins, im no tech guy and few things I don't understand and wondered if anyone can help

I used primodice abit and a few others but mainly stuck to dice games  like bitsinodice.com and another one called justdice and they state they are provably fair, how can I check that this is true?  pls bare in mind im no tech whizz and will need in layman's terms

cheers people