Just playing the game itself is huge. It can supplemented with book study or youtube, maybe not audio only though. Just playing, enjoying the game, making it a habit, that’s a huge part of it.
@KingBlooDrinker57 middleground between learning so much openings and learning nothing, then just learn 1 opening for white and play it every time. Get both of best worlds, not so much study but also stay even or get an advantage to your opponent early on.
It can be useful but not if you don't understand the position