Description
A lot of people chose Parse because they had no experience with developing backends. The current migration guide is a great start, but much of it is just an executive summary for people who already know what they're doing (particularly the section "Deploying to Heroku/MongoLab").
What's really needed is a true beginner's guide and best practices that takes you through all the steps of setting up a Heroku account correctly, installing node, setting up mongoDB, migrating everything over, making sure everything's working, etc. Ideally, you'd be able to follow the steps to do a complete migration of a standard Parse app with little to no experience in the platform/languages. (Sort of like the original Parse tutorials for developing your first iOS app with Parse integration.)
Otherwise, a lot of developers will be left out in the cold here, either abandoning their apps completely, spending weeks/months learning new platforms/languages, or spending thousands hiring someone else to do it for them.