Do we have a r/rimjobsteve equivalent here?

The point should be to bring everyone up, not pull others down, though

Down votes is the price you pay for trying to be informative

Are there any of these communities you could recommend?

finance

even stuff like £ is unsupported.

Probably not an issue then…

Is there? What’s this book called… so that I know to avoid it

There’s infinity? I can’t find it in fdroid. Is it play store only?

Neither do I