For Christians we are to please God but then how do we please God ? the Bible says to believe in God's Son Jesus Christ through the Holy Spirit. Sounds easy but man's practices or beliefs made it more complicated. Some believe it is alright to make images. Some believe Jesus Christ is just a human being. Some believe the Holy Spirit is not a Being but a force or power. Some believe in etc. etc.Some do not care anymore.
What could be the best choice or beliefs ? The best could be to humble ourselves before God and pray. Also read the Bible, pray for understanding.The teachings of the Bible should not contradict itself, so if there is some contradiction, then something is wrong somewhere.Also it is not just reading but doing also and being.
After 41 years of reading the Bible, i still find ways in me that i need to repent of. So growing never stops.
In short or summary Christian life is a lifetime journey.