Where can I post questions on how do construct formulas in Onlyoffice/Libreoffice spreadsheets?

Short term: I'm trying to automate transcribing a list from:A123234B456567789C345

Into an array/table123, A234, A456, B567, B789, B345, C

Long term answer I'm looking for: where's a lemmy community I can ask questions like this (like about using formulas in Librecalc/Onlyoffice suite/maybe VBA with them too) in the future?

Or, if not yet established on lemmy, recommended librecalc/Onlyoffice forums?

Thank you for your time.