You have to decide for yourself where to start. Nobody here is going to give you a test and check your score. You have to decide what you want and then do what it takes to get it. If you're not willing to research the differences then just pick one at random.
Frankly, if you get overwhelmed by the presence of too many choices then you're going to have trouble no matter what you pick. You need to get past that or it's going to be a continual problem for you, both in life and in programming.
In the words of the ancients, one should make his decisions within the space of seven breaths. Lord Takandobu said, “If discrimination is long, it will spoil.” Lord Naoshige said, “When matters are done leisurely, seven out of ten will turn out badly. A warrior is a person who does things quickly.
When your mind is going hither and thither, discrimination will never be brought to a conclusion. With an intense, fresh and undelaying spirit, one will make his judgments within the space of seven breaths. It is a matter of being determined and having the spirit to break right through to the other side.