There are hundreds if not thousands of different linux spins out there, so how do you choose. Easy, you distro hop. This is not a very popular answer but it is the best answer in my mind. Don't you test drive a car before buying it? So how do you know if the distro you choose is going to work for you unless you take it for a test drive. Now that being said, this advice is for the new comer to the Linux world who does not have the experience yet to understand the whole new world of computing they have just entered. So I say jump around, try one and then another, keep trying new ones until you find the one you like and the one that best suits your needs, and once you find that one, try a few more. Once you find that close to perfect fit, get to know how the whole ecosystem works and how everything interacts together, then once you have a grasp on things, thats when the real fun begins.
As I mentioned in the above post, I recommend trying as many different distros as you want, there is such a variety to choose from, but don't let that overwhelm you. There are only a couple main distros that you need to be aware of, the rest of them are just spins on those distros, they may have different packages installed, or a different desktop, or maybe a window manager, or system utilities, any number of things, but one thing is going to be similar on all of them, they are all based on one of the major distibutions, Arch, Debian, RedHat, or Open Suse. Things like Ubuntu, Mint, MX linux, Pop OS, are all Based on Debian, where as Manjaro, Arco, Artix, and Endeavor are based on Arch, then you have the Red Hat distros like Fedora, and CentOS, Open Suse has a small following and I know of Gecko Linux as a spin but I don't think there are any others. So again do not look at it as choosing 1 distro out of hundreds, look at it as choosing 1 main foundational distro with the asthetics you want, and whatever you miss out on you can always add in. So go to Distrowatch.com, or find a Linux youtube channel (or click my youtube link, hint hint) and start your journey today.
Once you have found the distrobution you want to check out the fun can begin, lets get started. First, if there are several options of downloads or spins of the distro you want to try, choose the one you are most interested in and download the iso file. Second navigate to the directory on your system containing the download. There are several tools you can use to create the bootable usb, if you have one you are comfortable with, use that, if not, I recommend downloading balena-etcher, it is easy to use and after the dd command in linux (which you dont have access to yet) it is the program I prefer. Once you have balena-etcher downloaded, run it and select iso file you just downloaded, second make sure your usb key is inserted and select it from the options, make sure to make the correct selection to avoid losing any important data. Once the file and usb are selected, choose flash, it will take a minute or two but not too long. once finished, you are set with a new usb live image which you can use to boot into your linux environment.