One important lesson to learn as far as cryptocurrency goes is that, you can not time the market no matter how skillful you in reading chart and graphs, you can only control your trading and investment entry and exit!
Of course you can't time it correctly you just read the charts and graph. The charts and graphs only speaks of the past. You should keep your self aware of the current events too. These events have a huge influence on the market. Events can trigger the price to go down (an exchange hack) or go up (lets say ETF approval). Also "expectations" can also lead the price to go above or fall.