a) You want to assemble only rendered footage. If you have real footage, well the greenscreen node is actually good, but for color grading DaVinci or Premiere are more advanced (though you can get a lot done in Blender here as well if you fiddle with the right nodes compositor).
b) You can accept some limits wrt adding text overlays. There is no simple way of doing that like in P or DV. But: You can trick with preparing some .png's and fade these in and out (which works but limits you on the effects), or add the text during render, but that limits you on flexibility (someone needs a text change in last second, yay!).
But I think you can go with basically any tutorial you find, it is not complicated in general. And a lot of your general blender knowledge transfers to VSE, which is a huge bonus in comparison to learn DaVinci or Premiere (which are monsters, crashy monsters).
[1] https://www.blendernation.com/2020/05/17/blender-power-seque... [2] https://developer.blender.org/T78986
Blender’s VSE is too unlike normal editing programs and the performance is bad as well. It makes your workflow more clunky for no gain unless you’re also mixing 3D scenes into your video.
There are ambitious proposals to overhaul the VSE so hope might be on the horizon.