Shortcut and Right Knowledge

Is there a shortcut? I personally believe there is but most people would say that there is no such thing as shortcut, you just have to study very hard and in a way that is true but in some cases no.

Left Knowledge vs Right Knowledge:
The shortcut is having the right knowledge (unfortunately, for me, I have to burn time and braincell to gain this knowledge that is right, for me)

Knowledge that is not right would be called 'left knowledge' because knowledge can't be wrong so it would be incorrect to call it such. The strange thing about these two is that they can reverse. Left knowledge can becomes right knowledge in some points down the road in your learning and vice versa.

Left knowledge are plenty, right are few.

What is right knowledge? Knowledge that really clicks you. A knowledge that is right for me might not be right for you either you already know it or don't need it or is not the right time (in that case, it's 'left knowledge') for you to have it and that is the problem with teaching.

How can we give knowledge that is right for everyone? Especially those that are looking for shortcuts.