Any guidebook to getting published or “10 secrets to effective self-publishing”or anything like that you might buy will be out-of-date before you buy it. Don’t waste your time or money. Publishing is changing too fast these days, and there’s always some new avenue for getting your stuff out there. I suggest you just form communities and connections through whatever platform feels good to you. No one who writes a “get published” book has anything to say you can’t find out for free online, or that you don’t already know. Write the stuff you want to write, put it together in a pretty package, and try to throw it at people who would like it.