treefroggy The skills you acquire from each game compound upon each other.
Yes, absolutely. Some From Softwarian game engine-y gameplay design idiosyncracies are similar if not identical between games, so lots of skills are totally transferable too. The general shape of their control schemes are roughly the same, for a simple example… you can be certain your primary attack is mapped to R1, your items and especially your healing are mapped to the left and/or top face buttons, etc. Elden Ring even still has the same (bad but let’s not get into it) fall damage mechanics as Dark Souls if not Demons’s Souls’s.
More cerebral aspects of playing the games are also the same. The way exploration and the game worlds are laid out on a micro level are quite reminiscent of each other, even if they definitely can be thought of as being arranged into a few at least sort of distinct macro phases, with Demons’s Souls’s and Dark Souls representing one more labyrinthine naturalistic phase, Dark Souls II, Bloodborne, Dark Souls III, and Sekiro representing a somewhat simplified Series of Tubes macro world design, and Elden Ring incorporating elements of all of that into a world that is simply Huge.
If anything, though, the main barrier to getting into these games for many people seem to be just believing they personally can do it, and just trying to get through their first one. They’re not not hard games but they’re certainly not purposefully trying to create some kind of upward trajectory of difficulty in any sense. That’s why I feel if you can get through one you can get through all of them, with the exception of less so Bloodborne and more so Sekiro because the combat and character progression is so purposefully different from the rest of the games.