[einpoklum]

LibreOffice is probably about 10% of the size of MS Office these days...

As for instructions/support: Changes between subsequent versions are minor. There was a versioning scheme change recently, so you may be thinking "Oh, LibreOffice 7.3 vs 24.8, very different" - no, mostly the same thing, it's just that 24.8 came out in 2024, in August. Also, there is ask.libreoffice.org #libreoffice on irc.libera.chat , and there are Telegram and Matrix channels... so just ask.

But it's true that with 0.1%-0.5% or so of the budget MS Office gets, it's difficult to keep all of the materials fully up-to-date.

[ozim]

Question was to the person who claims he is using Office 2003.

I think LibreOffice 2024 is much better than Office 2003.