Reading official docs (be it postgresql, clickhouse, elasticsearch, redis), a lot of googling and stackoverflow, reading blogs and watching presentations on lat

Reading official docs (be it postgresql, clickhouse, elasticsearch, redis), a lot of googling and stackoverflow, reading blogs and watching presentations on latest developments (like Altinity does for ClickHouse). Thing is I want to cover the latest stable version of tools im using so i can take advantage of their latest features that might be absent on older ones and not covered by older third party content. The latest stable docs and changelogs are my best source for that.