Some links we recommend to services and products:
A great list of data of Masternode coins that lists ROI and numbers of active masternodes and much more.
Cryptocurrency Market Capitalizations | CoinMarketCap
The first place to check data on any cryptocurrency project.
Coinbase.com - Buy and sell digital currency
Coinbase is the easiest and most trusted place to buy, sell, and manage your digital currency.
MyEtherWallet.com - The best Ethereum wallet
This is the number 1 and most recommended wallet for you ERC20 tokens and Ethereum coins.
Trezor.io - Hardware Wallet
A hardware wallet with support for MyEtherWallet.com
Ledger - Hardware Wallet
A secure hardware wallet also with MyEtherWallet.com support.