B4R Question String/variable handling guide

I would be so thankful if someone could demonstrate some variable/string handling. I'm having problems understanding the documentation when there are no actual examples there. For example:

• Reading a single (or multiple) byte(s) from a byte array, using it in an If- or Select-statement.
• Converting between types correctly.
• When you need to use rRandomAccessFile and so on.
• Binary comparison om single or multiple bytes in an array, string, numeric variable and stuff like that.

I tried to use the rRf24 library to communicate between a few Arduinos, but I keep messing up the string handling/conversions.

Simple examples covering other stuff, such as operators, Core functions etc would also be great. Since the footprint of B4R is a bit on the heavy side I prefer using less conversions etc when I can.

Best regards,
Peter