>>2408771AYRT
You're so polite omgLemme preface this by saying I know fuckall about traditional media outside of crayons and markers (not even quality ones).
I believe that using a sketchbook is one of those things you can't necessarily fuck up? I'd use it to draw daily. I think another nona had the actual termonology for it but I can't recall, but practicing control over your hand is good with drawing lines repeatedly. You want to use the sketchbook as the cheapest method to establish your basics and also to tackle the fundamentals - line control, hatching, observing reality, breaking things into basic shape, shading, coloring… that kind of stuff. Your first sketchbook will look like absolute ass, and that's why dating your works is important! You gotta keep track of progress to keep motivation moving forward during times of doubt! That's what I tell myself anyway (it gets complicated further in, when progression becomes murkey). During this phase, I'd say, use the cheapest tools imaginable. Once you can draw what you want without the communication between mental visualization and hand-eye coordination being a wall, then you can experiment with traditional media and chew through your wallet.
Looking at the inspirations you posted, I'd day the initial one has a focus on anatomical familiarity, color theory (god help you, that shit is beyond my comprehension), and perspective. Line control there is optional, but could help. The other inspirations look like they're requiring a similar skillset applied differently. Art programs overall are a one-time investment versus traditional media. I could be doing it wrong, but once you net a cheapass tablet (give or take 60 USD), a free art program (Krita for instance) and a laptop that can handle your preferred canvas resolution, you're good until something breaks. Programs like Photoshop and Clip Studio Paint have brushes that can mimic traditional media to an extent, but it's a kind of wild west on the brush settings that look best.
Praying other nonas will pitch in since I probably explained something poorly. Hoard as many tutorials as you can!!!