When downloaded from the official website or from one of the mirrors it links to, it is perfectly safe.
Yes, It is just as safe for your laptop as it is for your desktop
Yes. ...and free, too!
No. When downloaded from the official website, all components of OpenOffice are safe to use.
Very safe. Just make sure you download it from their official web-site. See related link.
People like the software because it's 'open source' - meaning anyone can make changes to it as they see fit (unlike MS Office which is copyright by Microsoft). OpenOffice is perfectly safe to use.
No - downloading OpenOffice is perfectly safe - so long as you download it from their official web-site (see related link). I can't vouch for other sources though.
Yes. OpenOffice is perfectly legal.
Yes. OpenOffice should be available in the repository for Linux, and is available on OpenOffice's website for Windows.
OpenOffice 2.4.0 was released on March 27, 2008.
You can have a maximum of 2292 columns in an OpenOffice spreadsheet.
Jambo OpenOffice was created on 2004-12-04.
Absolutely - OpenOffice is a fantastic alternative to the strangle-hold of Microsoft Office. I've been using OpenOffice since version 1.2 - and have never had any problems (either with the download or the software). Just remember to download it from the official OpenOffice web-site. Incidentally, Version 4.0 has now been released for download - see related link.
Only you know which operating system your version of OpenOffice is installed on. The version of OpenOffice you're using, can be found by - opening any document, clicking the 'help' button, and selecting the 'About OpenOffice' option.
There should be no problem running OpenOffice on Windows 10 and OpenOffice has always been able to read Word files (there may be problems writing some of those files back out as the same Word format due to licensing issues, but if you intend on switching to OpenOffice you will be saving as OpenOffice format not Word).