Hopefully your machine can boot from a USB stick. I download a free program called Etcher, there is an install version and a portable version both do the same thing, this program will burn the linux .iso to the usb drive so it will be bootable and you can install linux from it.
Download the Linux Mint Cinnamon Edition .iso file for 64bit and hopefully your hardware will run a 64bit OS, I don't recommend migrating to the 32bit version of linux, it's not well supported and is on the way out. Many linux distros have already dropped their 32bit version.
Link to the linux mint download page:
https://linuxmint.com/download.php
Link to the page where you choose which mirror to download from (I choose a college near me, usually James Madison) once you click this, a dialog box opens asking where you want to save the file, -OR- it will automatically start downloading to the default location if you haven't changed it to ask you where to save files. This link is for the 64bit version of Linux Mint 19.1 Tessa:
https://linuxmint.com/edition.php?id=261
Once you have made the USB stick, boot to it and it will start up and you can get to a fully operating desktop, running linux. This is not yet installed to hard drive, but you can run a full version of it to see how you like it. So far, you have not changed or hosed your windows partitions. I do not recommend dual booting windows with linux, it is a pita that more advanced users can negotiate fairly easy but gets the novice users in more trouble then they don't like linux. Otoh, the more advanced users already have ditched windows totally..
My best advice is to get a new SSD solid state drive, disconnect the drive with windows running on it, connect the SSD, boot from the USB, once at the desktop you can click on "Install linux mint" icon and the install will start. You will have to answer questions like time zone, user name, host name (your computer's name, all lowercase, 15 characters or less) and a good password. Pick an easy to type password as linux is very secure and you will be required to type that password many times but this is the security linux offers. Linux Mint will partition the hard drive during install. You can run linux this way, it will be totally installed, without windows. If you want to go back to windows, simply disconnect the linux drive and reconnect the windows drive and boot the machine. It won't even know linux was ever running on it. This is the BEST way to manage both windows and linux.
For a laptop, you should seek out local help that could swap the drive out for you, or help you with the install. You can connect an external SSD and install linux to this.
If you have any computer geeks in your circle of friends, especially ones that already run linux, most would be glad to assist.
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Linux Mint Debian Edition.. The Linux Mint team decided they would create a debian fork in the event Ubuntu (which linux mint is built on) ever becomes unavailable, i.e. Canonical (the company that owns Ubuntu) made things tough or wanted to cash in on the success and make life hard, etc... The Linux Mint Debian Edition, known as LMDE3, it a "rolling edition" which means that it doesn't get an incremental upgrade, like going from 18.0 to 19.0 which requires a new upgrade, the rolling edition updates itself as developers release new packages, and so it will never need to be reinstalled, it will always be up to date to the latest version. I use this on two machines and I use Linux Mint 19.x on two others. Both run good both work, it is a bit of work upgrading the 19.x machines when a new version is released but so far Linux has upgraded itself just fine to the newer releases without issues.
The LMDE3 install is a little different, it boots from USB like the other one, but you must manually partition the drive and assign the correct boot flag and specify the "/" partition. This version runs a little faster for me, it seems more stable, but does require a slightly elevated level of competence over the casual user to install it.