You are going to get differing interpretations from different christians. The fruit of the reformation. So if you ask certain questions you will get a debate here. And Jews would often interpret passages in the OT differently than christians.
I am not familiar with a Gregorian edition, but it is probably an edition of the Douay-Rheims version that was in use in English speaking countries for about 300 years. The version I like best is the New Revised Standard Version-Catholic Edition. If you want to read it online you can use the link below, which also has other translations.
There are also editions in print that have footnotes to explain various things, like the New American Bible that I also have. For more technical matters regarding biblical interpretation, I use the Jerome Biblical Commentary, though some of its views are not 100% correct IMO. Nonetheless, it is an exhaustive reference.
Bible Translations