George:
The thing about lagers is that they are a lot more difficult to make than ales. Ales (e.g. Cameron's of Hartlepool Strongarm or Brains of Cardiff S.A.) are a lot closer to old "farmhouse" type beers. Modern Pale Lagers such as Fosters or Stella are more modern products made in big factories.
Being fairly low on flavour and very "clean" tasting, you can attempt to make them at home but if you don't get it dead right there's nothing to hide behind - you can't just add some more hops or some sugar whatever as you can with an ale.
Also you need really good temperature control so you nearly always need to get a dedicated fridge with a temperature controller.
Look, I make lagers but have the equipment, but mainly do ales as lagers are a PITA. I'd recommend that before trying to replicate something like Fosters you should brew a few ales to get the hang of basic principles.

Curryhell:
When Dave wrote the book the only Belgian that was known in the UK was Stella wifebeater

However once you get into brewing, Belgians are not hard - it's really all in the yeast, a lot of specialty yeasts are available from home brew suppliers to give those spicy "phenolic" overtones, so you can make something very close to a Leffe etc.