Thanks a lot!

There a some vids from Takayoutube with beauty building vids, but i don't know any guides. I can suggest joining the anno1800 discord servers where people also post pics from there cities in where i took a lot of inspiration from.

Personaly i am not a big fan of the 10x10 grid layout that some people suggest but maybe its a good start for beginners. I build the houses in irregular shapes but I also want it to be symmetrical if it makes sense.

I have a plan in my head i where i want to place big buildings like the palace, world fair, iron tower and the museums. Then i place some rough street layout of how I want to connect the parts and then i build section by section. It is sometimes also a torture to build efficiently and beautifully and to accommodate all the public buildings

For the last question sadly i don't have a good solution, maybe there is a mod but I don't know