I have access to GDAX and I found this Depth chart that enables you (in some way) to check the momentum and the volume of demand and supply there is in the market. Tradingview also offers this chart.
This post explains how it works.
Lessons observing the chart
Lesson 1: there are positions that enter and exit in miliseconds
When you start watching this chart and see how the buy/sell forces drives the price, you will see a lot of positions entering and disappearing. The limited refresh of the screen just enable you to see flashes. The amount of people with machines procesing automatic positions and cancelling them depends on the coin.