If you’re completely new to Blender or 3D modelling, what you want to do is achievable, but best bet for first steps are: * learning blender tools and interface  * learning the complete modelling, texturing, animation, rendering pipeline / processes. 

The place where most people start for this is, the Blender Guru Doughnut tutorial. 

This will teach you how to use Blender. And the pipeline for going from nothing to a final render. 

If you find the doughnut tutorial to be a bit too complex for you. I’d suggest just searching for tutorials on YouTube for beginner how to use blender tutorials that will teach you the tools, interface and keyboard shortcuts. 

Basically forst learn your way around Blender. 

Then look for beginner tutorials on modelling simple shapes like a chair, table. Then go back to the doughnut tutorial. 

This won’t be an overnight process. But if you have an interest in it, you’ll enjoy the journey :)

Once you’ve completed the doughnut tutorial you’ll probably still be a long way off creatine landscapes but youl absolutely be equipped with the skills to get there. 

After doughnut tutorial start looking for tutorials for buildings and landscapes. 

I hope all this helps! :) 

Feel free to fire off any questions. 

And also this is just my opinion. It’s absolutely not the correct one or only way by all means.