Guys in every tutorial I see it says I have lo locate the data.win file, but how do I locate it? Where is it located? It would help me a lot as I would be able to get a lot more practice!

You can just use the Windows Search Bar/Mac Search Bar to find the file For the windows search bar just type data.win, select it [there may be 2 if you also have undertale like me] and click "Open File Location" and it should show the location folder. [its probably been 7 months and you have probably resolved this], also..why do you even need to use Debug mode

Debug mode has quite a few options which are really convenient for training purpose : you can save wherever you want, reload the room you're currently in, quickload your last save. These are the main features I use but I know there are many many more. Is really useful for training skips or fights and that's why most Deltarune's runner use it

Oh.