How to install apps in sailfish (x)? - Guide for noobs like me

AFAICS, nothing really. For background information and suitable Android app stores, see section 4.5.

Thanks! I know about the alternative ways to install apps. I was just wondering because this has been listed as one of the app sources in the initial post…

That was a thing called “Store” in the category “Marketplaces”, which was a slightly disguised Aptoide Store client app.

Years after Aptoide became a malware distributor, Jolla has ultimately removed it from the Jolla Store.