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1. Start with generators

this is a fastest way to create application:

rw g crud post title content date:date published:boolean
2. Then create routes

in config/routes.js and remove this file (public/index.html)

exports.routes = function (map) {
        map.get('/', 'posts#index');
    };
3. Design your database

in db/schema.js and describe models in app/models

4. Keep you controllers thin

write tests, and good luck.
If you have any questions feel free to ask at RailwayJS Google Group