Do you have access to the original documents of scripture, reading both hebrew and greek? If you read an English translation you are beholden to the translators who made decisions on what English word best expresses the hebrew or greek word or words.Good tools according to whom friend? The authors? The publishers? Indoctrination? Where is supplemental writings of men promoted or even mentioned in the New Testament? His Word is our daily bread, not men's merchandise. His Word is sharper than any two edged sword, not men's merchandise. His Word saves, not men's merchandise.
Try it yourself and see, that is all I am saying. But try it out of a pure heart of contrition to learn His Wisdom as He intended, unadulterated by men. Follow His instructions on importunity in Luke 11:5-13.
I do believe the best method of study is to observe scripture, write down questions you have from your observations, try to answer your questions, then interpret what you observed and answered. Once you do this, you would be wise to see if others also came to a similar understanding. If no one who came before you ever interpreted scripture as you did, it should be a huge red flag. We have 2000 plus years of brothers and sisters who observed scripture and wrote down their observations/interpretations. That legacy (Read Hebrews 12:1,2) is there to give us guidance and keep us from following a false path.