i think Internet is the best place to learn it gives you all the information about bit coin. because present in internet all videos and information available so try once in this and learn something from this. next coinmarketcap site it is one of the best site for every one. who want to enter in to crypto currency. so you have to search in this internet and coinmarketcap.cpm site next one is blockchain.info it was also giving more information about crypto currency.