it's all about what you conceptualize as what's going on...a good guy and a bad guy duke it out. they each have different health, power, speed, and any special attacks. they each start out a particular way (the constuctor) , and can be modified by
the good guy picks up a bat, so the accessor function that modifies the good guy's power variable goes up by 6, etc.). OOP is a more "real world" literal way of approaching things. you can do anything with most real programming languages (hell, my dad only programs in BASIC and they pay other people to translate his code into C++ for applications for the NSA and CIA and other "stuff". he's a math major from rice university that taught assembly and fortran in grad school). i got to live in washington D.C. for a month in 1994 because he was showing the NSA how to use his program. if you've seen the movie "enemy of the state"...that's what the NSA buildings look like. they're coated in copper so that radio transmissions and shit can't get in or whatever. point is, if you learn to "think in computer", then you will be able to pick up any syntax of any particular language fairly easily. for some weird-ass reason my dad likes basic. i don't know why. it's not like learning a foreign spoken (or written) language where they have a different thought process, most of the computer languages were written in the states, so it's ONE general thought process, and the rest is "abstraction". when dealing with abstraction all you have to think about is the important stuff. you don't need to think about what hat the good guy is wearing because it's already there. but it IS important when it comes to the good guy's health level, or what weapon he may have. so about the folders stuff, you've got it pretty much figured out, all you need is the syntax.
much luck
--the bl00dninja