I'm guessing he was referring to the King James Bible.  A lot of people treat it as the best Bible, but I'd argue that the ESV and NASB are the most accurate Bibles.  They are based on the oldest manuscripts (therefore closer to the time they were originally written and having less time for copy errors to sneak in) and are word for word translations  (Most Bible translations are word-for-word, Phrase-for-phrase, or paraphrase).  Word-for-word translations are the most accurate, but can be harder to read because of grammatical differences between languages and because of figures of speech, but they prevent translator bias from changes the word of God.  Paraphrase translations tend to be the easiest to read, but can have more translator bias in the translation, so I usually avoid them.  I did buy a New Living Translation Bible for my special needs son so he could read and understand the Bible.  It is one of the more Biblically accurate paraphrase Bibles.

There are lots of people that believe the King James Bible is the best, but I have never heard a reason for this belief.  They say, "everyone knows".  That isn't a reason and "everyone knows" lots of things that are totally wrong.  King James authorized this translation as he was consolidating his power over the Anglican church.  At the time, many Christians refused to use it because they thought it was being used as a power trip by the King of England.  It is a decent translation, but not the best.  (Don't be super worried, there are lots of good translations)

Reading through the Bible from Genesis to Revelation is a good plan.  The basis for everything is in Genesis, so it is important to properly understanding the whole Bible.  Many people try to suggest that Genesis, especially the first 11 chapters, are just parable and therefore not true, but that is false.  You can check out my series on the subject:  https://trustjesus.substack.com/p/literal-genesis  All six articles are useful, but if you don't have time for all 6, you can read the last 3 which are better organized.

If you have any more questions, feel free to ask.  I will answer as quickly as I can, however I am likely to be unavailable most of the rest of the week because I am taking my eldest to college and my youngest has eye surgery out of state.