Dark Dex roblox help?

So basically hey I'm back.

I have been experimenting with Dark Dex Synapse X edition.

I need some help with ReplicatedStorage, can someone explain in detail what ReplicatedStorage is.

Secondly, how would I make an easy auto farm with Remote Spy?

Thirdly can I modify the files and more from Dark Dex. What I mean is if I had to buy something (with Robux) not saying I'm broke, I search for the Robux item (in-game item) and move it to my backpack. The reason why is because I don't really know what I'm doing and yeah that's why I'm experimenting. So if you can link me to a tutorial on some basics or if you know a bit I would so appreciate it.

I also need help with call remote and call function.