Renters- pretty easy if you have a good property. Put up a sign. Use Zillow to create an ad (get professional photos). I use Cozy.co for collecting rent and taking applications. They will also post your ad on some online services like realtor.com. For home buyers, about the same. I haven't sold anything FSBO, yet. You might also make friends with a realtor and plan the cost of their commission into your projects. Good luck!