need trusted site name and join step
once first you have to check in coinmarketcap site here each and every coin information available so once check this site. then you get idea about coins trading. next search once blockchain site. here detailed given about bit coin here more wallets developed for investing bit coins. software wallets and hardware wallets. so choose one of the best wallet from that and invest in to that wallet to your money. in hardware ledger nano s is the best wallet for investing bit coin. next coinbase also good to investing.