Hi
May I respectfully suggest that you contact the NCCA (Carpet Cleaners Association) Tel: 0116 2719550 and book onto one of their two day training courses.
This will enable you to see exactly what you are getting yourself into without any hard sell. The NCCA provide training and are not in the business of selling chemicals and equipment.
You will learn all about the fibres and fabrics also the different methods of cleaning available to you and this should help in making a decision as to where you want to target your business.
Hope this helps
Regards
Derek