Need advice for a beginner / no knowledge person in vtubing

Hi !
I would like to take advice for beginner / no knowledge in vTubing.
I want to make this my hobby after 9 to 5 shift
But I'm not sure where to start and what to start .

the only thing I have done before is simple Live of game using OBS and stream it to YT and FB

CURRENT SET UP ( bought in 2023 NOV - I am thinking that I can use my current set up albeit underpowered to get a feel first before committing to this otherwise I can upgrade soon )

CPU : Ryzen 5 5500
GPU : GTX 1660 SUPER
RAM : 32GB (set to 3200mhz - dual channel but different frequency so I had 3600 and 3200)
Monitors : 1x 27 Inch (Main) , 1x 24Inch ( Side ), 1x 15inch ( OBS or System Monitoring )
Storage ( if this is even relevant ) : 2x SSD + 1 m.2 ( 1TB , 500gb , 500gb )

FUTURE PLAN SET UP ( maybe in 5 - 6 years ? I don't really have any vision or plan to use vtubing as my income source so I'm not in a hurry - also I can upgrade in 1 year but I'd rather not waste money or let's say impulsively buy things when it is not necessary )

CPU : i9 or 9800X3D ( leaning to intel because I've been using intel system for 22 years before switching to r5 5500 due to budget constraints pandemic years )
GPU : RTX 4080 / 4090 ( I don't really use AMD and I don't want to. )
RAM : 32GB ( frequency depends on motherboard but by this time should be DDR5 now )

also if external or additional stuff is needed
I can use my S23+, Iphone13, and Redmi SE 8.7 ( I think I saw a video somewhere using iPhone camera for the motion capture or something )

Thank you !

PS. Sorry but I don't know why some of the text got enlarged after publishing the article.