Hi Steve,
I have just started also in the Carpet Cleaning world also. I would recommend reading through previous posts about starting up, there is a lot of good advice on this forum.
Having looked at all the options of machines for about 4 weeks before placing an order for a machine I setteled on the Prochem Steampro 2000 powermax. It met all of the minimum requirements that were recommended to me from this forum.
Prochem are well established and provide everything from, Machines, Training and Chemicals and accessories for starting your business.
Other machines to look at are the Recoil 3, Ninja and Alltec.
My advice to you would be get comfortable, brew a coffee or tea for yourself and take time to read through the previous posts on this forum, there is a mine of information here, then start asking all the questions here, you will get all the help and advice you need for starting.
Best of Luck and Welcome to the Forum.
John