https://speakerdeck.com/pgpro

http://postgres-bits.herokuapp.com/#1
    Postgres - The Bits You Haven't Found
2021
https://speakerdeck.com/pgpro/diagnostic-tools-and-query-tuning-examples-in-postgresql
    ! need to read
2020
TechTrain - Evteev - PG Quick Start ru of 42:51
    https://www.youtube.com/watch?v=EfNfB1ob-fM