I have Office 2007 Home & Student but didn't install it on the new computer. Libre Office is installed instead. I haven't used it much yet but word documents created in Office 2007 open OK in it, including docx. Libre also opens documents containing some quite complicated tables that were created in MS Word 2007 and the table layout doesn't get changed. That was where I found the free (or donation) Office suites fell down when I tried them before. A table created in Microsoft Office could be all over the place if opened in anything else. Not so with Libre Office 4.2.5 though. It's probably going to be a 'keeper' unless I come across something it won't do.
I've heard lots about spread sheets being useful and have a friend who told me he didn't how I got through life without them!
Well, I seem to have done OK so far but I'm sure I'd wonder how if I took the time/trouble to learn how to use one. I'm not as bad as another friend who doesn't have a computer or even a phone of
any kind. I often wonder how he manages but strangely, he's the most conversational, happy and outgoing bloke I know.
Maybe worth a mention is a program called 'Jarte' It uses Windows WordPad as a basis and adds functions to it. I've found Jarte can be tailored to make an excellent Notepad replacement with a spell-checker. Used it for a good time now.