To the topic starter: welcome to the forums.
If you are decided in trying Linux Mint, then I suggest getting a pluggable USB disk, 32GB in size at least, download the ISO and "burn" that ISO file onto the stick. You will have to make a few adjustments to make sure your computer boots with the USB disk rather than the internal disk into Windows. Check it out like that for a while.
Linux Mint, like almost all other distros based on Ubuntu, use one appearance or another of Ubiquity installer. This was supposed to be designed so beginners could feel at home, but it could be very ponderous. Usually it looks over the disk (which takes a while on my computer) for the main Windows partition and offers to install the Linux OS in one half of it. If you don't like it, and want to make the "root" partition smaller, it will take more technical work.
Don't let any of this talk intimidate you. If you really desire a walk through you're better off remaining on Windows. As others have said here, you could do well upgrading your computer's RAM to at least 8GB if you can. That way you could install Virtual Box by Oracle or something else, just download an ISO and "drop it in", running the VM in a Windows session and you never have to risk your internal disk or anything else.
If I were someone else I would ask you to look over Youtube. But there are a lot of videos there with bias, making suggestions here and there that you might disagree with. Especially if you intend to keep Windows and use it more often than Linux. Even with a walk through, there is one of a few people likely to mess it up at one point. That's why the Arch Linux developers gave up a long time ago LOL. I have tried to install it once but forgot "base" on the main entry for downloading the critical packages, and it was before I could get to GRUB, the desktop, network and too many other things. :/
