Links

Quick reference Sites

https://coinmarketcap.com/

Coinmarketcap.com lists the top alternative currencies which can be sorted by value and also provide additional information on where to purchase and current prices.

https://blockchain.info/

Blockchain.info provides the ability to check the balance of any Bitcoin address and transactions that are on the bitcoin blockchain.  The site also contains a popular online wallet (although a hardware wallet is preffered)

https://www.coindesk.com/category/news/

Forums-discussions

https://bitcointalk.org/

https://www.reddit.com/r/btc/

https://www.reddit.com/r/Bitcoin/

https://twitter.com/    (add $ infront of code eg $BTC in searches)

Exchanges

https://bittrex.com/

https://shapeshift.io/#/coins

Hardware Wallets

https://www.ledgerwallet.com/

https://trezor.io/

https://www.keepkey.com/

Other

Paper Wallet Generator.

https://www.bitaddress.org/