For explaining someone's bitcoin in hindi is really some hard.so i recommend you to take help from YouTube there are lot of videos explaining bitcoin in hindi on YouTube.
i have a link which explain you all about bitcoin-
https://m.youtube.com/watch?v=9E4QA7Lw8e8here you can find lot of videos explaining bitcoin in hindi.also they spread earning,market and trading info in hindi.so download these videos and spread to which one of your friend who is little interest on this.
i found also a blog who explain btc in hindi but it have too little information-
bitcoinsfree.blogspot.com/2013/03/bitcoin-hindi.html?m=1
hope this information helpful for you.