I´m sorry but not every cryptocurrency with a low market value has an online graph available. New graphs are being added as we speak.
How to use the price graph?
You can see a symbol of a cryptocurrency in the top-left corner of the graph (It´s BITB/USD in this case), right next to it you will find time intervals 1m, 30m, 1h. If you select 30m, one candle will represent a time period of 30 minutes on the market. The time period can be changed by pressing an arrow heading down.
Where to start trading BitBean
My favorite broker for trading cryptocurrencies is Plus500. They have a simple and a user-friendly trading plattform, really low spreads and a great english support available 24/5.