Some suggestions might be organic gardening, raising free range chickens, planting an orchard, bee keeping or building a pond and raising fish. Once you have determined an ecosystem that you would like to try first, do your homework. Learn the specifics as to how to care and maintain for the ecosystem. Once you understand what the requirements are, think of all of the ways in which nature can provide assistance. The beauty of a natural ecosystem is that the more you can rely on nature for your needs, the less you will spend on outside resources.
Experiment Expect the unexpected.
Chances are that as you design and try different approaches to permaculture there will be failures. But many things can be learned from experiments and failures. No doubt that your original design will change as you progress in you plan. Experimenting on a small scale will prevent big mistakes.