This tutorial contains a "fast" method for creating a new model. You can easily create a model in less than 20 minutes using this approach and you'll get faster each time you do it. Also, this tutorial contains a step-by-step approach if you like to see the details spelled out and see how things actually work. You'll also gain a much better understanding of the config.xml as placeholders come with the example files explaining what the nodes in the config.xml file mean.