Home brew storage
The key thing to remember is that the storage conditions can greatly effect the shelf life of your home brewed beer. You need to ensure the beer is kept somewhere cool and dark. The bottles must be air tight too, in order to stop the brew going flat. Glass beer bottles will probably give a longer shelf life than plastic (PET) bottles. Make sure you remember to label your brew so you know how long it has been in storage.
If in any doubt, just drink your brew as soon as it is ready and set another one going to replace the last one.