Most important skill abilities from the skill tree for a new player

Hello, I have recently started playing this game, and I am having a blast. I am probably halfway through Act 4, and I found myself in a situation where my skill tree branches in every direction because I was "feeling" that some skill would be okay. Now I have a question: are there abilities (those big circles) that are like the most important for a certain setup and I should build towards them, or should I just get what I find usable for my build? I am already at level 41, ranger, pathfinder, so I am asking for the future, because certainly I will be doing another character after this one, which is my entrance to this game.

All in all, thank you in advance!