User blog comment:PsiCubed2/Fractional Psi Levels (extended table, summarized)/@comment-36984051-20181130011622/@comment-30754445-20181130092733

I don't really understand the explicit expansion rules of BAN past epsilon-0 either... yet I know how to expand any array in that notation.

How? By noticing that the seperators in BAN are basically an ordinal notation. If you understand ordinals past epsilon-0, you can easily learn to read BAN just by looking at various examples.

And thank to this guy, we literally have hundreds of thousands of ordered examples of BAN expressions to study.

A fair warning: this is a playlist of over 70 videos, and it contains absolutely nothing besides an orderly climb of BAN numbers. Don't expect any explantions or tutorials. It's just a huge progression of numbers that you can study (the "pause" button is you friend)... yet those videos pretty much taught me everything I know about BAN.

Warning II: Being extremely well-versed in how ordinals work is a pre-requisite for learning BAN in this way.

Epsilon-0 is in part 25, around the 7-minute mark.