It’s very easy these days, little things can make life easier – like a USB3 caddy (£10) and of course a USB3 enabled port on the PC, but even those can be retro fitted to a lot of PCs for about £10 – I should add it doesn’t make it easer, just a lot quicker.
It’s simply a case of connection SSD to caddy and plug into PC.
Use one of the free tools, or ideally the one that comes with the SSD, I like the Kingston ones, but they all do the same thing really.
Install the SSD and boot it up, 90% of the time that’s it. Sometimes you have to repeat it for unknown reasons, but it usually works first time.
I should say I’m not an IT Techie, but I work for an IT support provider so if I screw it up, I can beg one of them to fix it for me, gives me confidence way beyond my ability.
You can do it the other way, back up all your data, do a fresh install, download all your software again, reinstall data etc, but it’s easier just to mirror it.