Checking charts can be useful, but understanding what caused significant market shifts in the past and calculating how much influence such events have now and in the coming years is also very important.
It is also critical to try to think about what those moves imply, since it is very easy to check the charts and see all the movements that bitcoin made in a matter of seconds, however those movements took months and sometimes a full year to materialize, and living through such movement is a completely different experience than to just look at it on a chart, and anyone that is trying to familiarize themselves with this market needs to remember that soon enough they will have to go through the same experiences, and if they do not go through this process they can be caught with their guard down.