The best thing to do is to export as PDF, then re-export as a PDF-X using Acrobat, then upload to lulu.com, thebookpatch.com, or similar Print On Demand (POD) service. You can select among various sizes, B&W vs color options, create custom covers if you like, and print a single book with professional binding at costs of typically around $5-$8 a book for color cover with B&W content pages. Naturally, you can print a thousand copies if you want, but it's nice to print a few proof copies for additional spell/grammar checking, wordsmithing, etc. before you go final.
Some POD services also give you a free ISBN number and option to offer it for sale on their site or make it private. (No, I do not work for any of these places, but have printed many books this way.) It is the absolute best way for newcomers to get started. It's also great for books with highly complex professional content.
PhD's and other subject matter experts sometimes self-publish really expensive books this way because large publishing houses are not interested because they know that only a dozen or so people in the world would have an interest in some of the highly detailed topics about which experts write. So these authors self-publish at high cost knowing that only a handful of books may be sold. Once you've dedicated years to amassing this knowledge, you wanna see it in print! Even if no one else buys a copy!
On the other hand, lots and lots of amateur self-publish novelists and musings for a few cents over printing costs.