Don't know about Libreoffice, but I use Open Office, which works really well - but you can't open Microsoft Word documents, even though Open Office says you can. If you don't need to open such documents, it's fine and works like Microsoft Word, Excel etc
Neither has a program equivalent to Publisher. Scribus (as recommended above) is a good open-source DTP program. PagePlus Starter Edition is also an excellent freebie (and is what I'm happy to recommend from personal experience):
http://www.serif.com/desktop-publishing-software/?mc=FSSPAGEPLUS