Out of interest, I've been reading some psychology topics online recently (I have zero background in psychology). For example, Maslow theory in depth. On and off, I come across terms that sound like having same meaning. So I need to search their explanation, in order to learn their differences, if any. More and more often, I run into situation where different psychology related websites giving slightly different explanation, or sometimes, even conflicting explanation. So, I'm often confused and unable to determine which explanation is the right one.
Is there a de-facto reliable source to learn psychology (except attending school), where knowledge and explanation given are considered as truth? Or... is the field of Psychology itself still full of ambiguity nowadays?
--- update 4/19 (summary)
My study approach is by keep searching and reading from multiple websites until I reach a point where I feel somewhat confident to take a guess. All along I've been uncomfortable with this approach because I find it not as productive as I wish, and the outcome may not reflect the truth.
My understanding from input of @AliceD and @Chris Rogers is that, it seems that to learn psychology in informal way for non-pro purpose (in my case, for personal growth, to understand myself better), this is the logical and viable way, even though it is not as intuitive as I've been hoping. And for those who suspect they have mental health problem, the best is to reach out to registered mental health professional for help.