CocoLopez

Not sure if this would help, but I found this channel helpful for understanding the basics and mostly avoiding wrong parts. Also he has some videos were he explains why you should choose one part over another.

Scatter volt channel

Can this be considered lightweight? not complaining, just curious

A lightweight office suit

You can check how old you are by measuring how low your nuts go.

I think latest Onlyoffice now supports pdf edition

Also telegram is feature rich over signal. Son you have better user base and features in one hand versus e2e encryption by default on the other.