I can not find a search button to search this site for common information.
Just click on the “search or ask your question” white box and type the keywords you are looking for. Some already existing questions will start to show on the drop list. You can click on one of those items or press the Enter key to show all the results of the search.
HINT TO SITE MANAGERS: Maybe a click-able “magnify glass” icon should be added (as in most search boxes) to the right of the input box?
To add to this answer (because IMO the built-in search facility is rather poor) use an external search engine and point it at this site e.g., site:ask.libreoffice.org Hope_54321 search site.