Interesting Resources

Blockchain Statistics

Bitcoin Richlist

Data visualization

Bitcoinity - Exchange & Blockchain stats

Payment Stats

Provably Lost Bitcoin

Transaction fee & UTXO stats

txstats.coinmetrics.io - historical block & transaction stats

UTXO Age

Public Interest

Blockchain Charts

TimechainStats.com

Bitcoin Terminal (for advanced users).

Bitcoin demographics & misc stats

Casascius Coin Tracker

Bitcoin Pricing Models

How Many Bitcoin ATMs

TimechainStats.com

Tsypruyan - on-chain metrics