yytan,
What is your background/experience with programming? Variable names are user defined and only provide a possible hint as to their value/use/purpose etc.
Your hung up on a insignificant issue. Starting out programming should be fun. You don’t have a million line legacy application that you can break.
You have nothing to fear from writing some code and running it to see what happens, you can’t harm anything. Therefore write some code, run it, observe the actions and results. Repeat. Have fun!
-pete