Perhaps your approach to viewing it needs to be changed. For example, I usually decide what damage type I want to aim for then go to http://grimdawn.wikia.com/wiki/Constellation and CTRL + F and find the suitable constellation.
Another approach I’ve taken is simply find a constellation on the outside that I think would work well with what I want to do then work towards it.
Simply doing these things has made me exceptionally familiar with the whole star chart. Learning it all in one swoop can be tough but if you take it a few chunks at a time you’ll be surprised how well you’ll begin to understand it.