Here is what I've found:
It's just as if a man were wounded with an arrow thickly smeared with
poison. His friends & companions, kinsmen & relatives would provide
him with a surgeon, and the man would say, 'I won't have this arrow
removed until I know whether the man who wounded me was a noble
warrior, a brahman, a merchant, or a worker.' He would say, 'I won't
have this arrow removed until I know the given name & clan name of the
man who wounded me... until I know whether he was tall, medium,
or... him.
MN 63
I've found this (and below) awhile back and interpreted as we ask questions about things such as whether the world is eternal or not, whether The Dhamma is true or not and so forth. The Buddha said that it's not more so than The Dhamma (it's not a "by the book" practice) but by applying the teachings to your life and seeing how it manifest from there. When we are targeted by an arrow and bleeding we ask questions of why and what but never how to get the arrow out. Also, there was one point where The Buddha says the answer is irrelevant.
Along the above lines, a lot of people go by reports, legends, traditions, scriptures, and so forth to determine the validity of their religious experiences but The Buddha (and other Dhammic traditions) focus on practice:
“Kālāmas, don’t go by reports, by legends, by traditions, by
scripture, by logical conjecture, by inference, by analogies, by
agreement through pondering views, by probability, or by the thought,
‘This contemplative is our teacher.’ When you know for yourselves
that, ‘These dhammas are unskillful; these dhammas are blameworthy;
these dhammas are criticized by the wise; these dhammas, when adopted
& carried out, lead to harm & to suffering’—then you should abandon
them.… When you know for yourselves that, ‘These dhammas are skillful;
these dhammas are blameless; these dhammas are praised by the wise;
these dhammas, when adopted & carried out, lead to welfare & to
happiness’—then you should enter & remain in them.”
AN 3.66
What I've done was to answer the four noble truths-what is my suffering (then I list from there). What is the cause of my suffering (my interpretation of it). Then whatever sutta you read rather than ask if it's true or not see if it addresses the sufferings you listed. Also, see if you can find the hatred, delusion, or greed. Use The Sutta as a backbone to solve such sufferings. He also said, as I wrote down, "just as the great ocean slants and doesn't drop abruptly so to gain final knowledge and training is a gradual process" (AN 8.19).
You'll only know if you apply it. Also, things such as rebirth may throw one off like me when those teachings aren't familiar. I'd say with anything keep an open mind. Rebirth is literal, I believe. However, I think a lot of cosmology such as talks with demons etc are metaphorical. Don't let it trip you up though.
Add... Dhammatalks, SuttaCentral, and Accesstoinsight have different numberings for the same suttas. So, you can cross reference.