All the adapters that I've seen come complete with the drivers and other programs needed to use them. If not then you'll have to purchase that separately.
Install everything, then you're ready to party. Simply press 'play' on your VCR and the footage on those old VHS videos will be right there on your computer monitor.
Each video editing software is different, but typically you'll have a 'record' button to press. That will capture the images coming from your analog source (the VHS player), then prompt you to save it afterwards.
Many also come with a sliding scale of features - depending upon the quality - which allow you to edit the footage; cut it; add music; add commentary; put in a gif of a squacking duck, if you so fancy; whatever in fact you want to do with it.
From there you can merely leave it saved to your PC, copy it onto a DVD, post it to YouTube, upload it onto a cloud, or otherwise embed it into any digital media format.
And those faded old memories, almost lost to changing times and dusty VHS, will live again in the cyber age.
(Incidentally, the baby is now a foot taller than me. Two decades on, he's suffering the indignity of recovered home movies of his first birthday being shown to his girlfriend and the entire of Wizzley.)