Nice! I think you'll like it. One thing, hope you noticed that it's an RPN calculator... takes a short amount of time to get adjusted to but is superior to algebraic entry.
Here is an expanded manual on working with fractions:
If you want to play with the HP family of calculators that are RPN check out Free42 (Android, Mac, and Windows emulator for a classic HP calculator. Note, it doesn't do fractions like the 35s)