If you're interested in using org-mode more extensively then this is (imo) the holy grail of customization walkthroughs: http://doc.norang.ca/org-mode.html

I scheduled (with org-mode of course) going through and reviewing each section spread out over a week or two... certainly didn't adopt everything but learned plenty and ended up with a nicely configured org-mode setup with conventions I've been evolving ever since.