It is at the corner. Image

As far as UI everyone needs is different. My partner setup is way more complex than mine but SO is coming from Maya. However that’s the same for every program I used. I edited and remove buttons and rearrange as I get used to program. Even outlook and word.

What you are describing sounds like is fusion360 or possibly z brush tutorials. For Blender 3.4+ I watched one tutorial video and then yt shorts for anything specfic. Plus you can render and animate once you are done modeling for print.