Buy Bitcoins - coinbase- Coinbase is the wallet I use most.
Bitcoins Per Person Shows what wealth distribution would look like if everyone wanted BTC.
Coin Market Cap - shows exchangeable digital currency market caps.
Bitcoin Prices across exchanges - shows bitcoin prices across different exchanges.
Bitcoin Mining Difficulty - for those thinking about mining ROI this shows the difficulty increases / decreases.
See Conversion Rates - quickly see conversion rates.
Bitcoin Clock - When is the next bitcoin halving?