Hi Richard,
As Helen said there is plenty of info on here about starting up. Carpet Cleaning is no different to any other business...they all have highs and lows and all take time to build up. It can be an expensive outlay but shop around, check ebay etc..., you good get some good deals. Ignore the negative comments, if it feels right for you then put the effort in and Im sure you'll do ok.
Best of luck.
Sarah