docs: walkthroughs on specific items

[tac0turtle]

There are many things that I was searching for in the docs, for example how a contract handles coins and how it can handle multiple accounts/coins and cross contract interactions. Reading through cosmwasm-plus I found the answer, but it took me a bit of reading the docs before going to the code. Having some walkthroughs of the cosmwasm-plus code or specific take aways for how to do specific things would be greatly beneficial.

[orkunkl]

Thanks!
Yes you are absolutely right. Planning a documentation overwrite with 1.0 version. I assure you, there will be modular learning content.