OK here goes.
I started my business in 1990 mainly window and office cleaning, But like alot of us it progressed and more specialized cleaning was involved.
I've attended a few courses over the years from window cleaning to hard floor cleaning and if I learn something from it then it's worth it, some have been cheap and learnt alot and visa versa.
As far as tile and stone re-sealing goes this has only been asked of me over the past few years (I am Mainly Commercial) I have been cleaning tiled floors (or so I thought) so I got on the internet and Tile Doctor was the one that attracted me when I was looking to see how to clean and seal tiles (that tells you who is top of marketing) I phoned up and this guy on the phone went through the process of the problem I had (of course he was selling his product) but after a few phone calls with alot of help I got the job in a very prestige's house done.
I then researched Tile Doctor and there marketing, I put in, tile cleaning in google for my area and surrounding area's and have a guess where the links lead me.
I went on the beginners course and realized how wrong I've been cleaning tiled floors for years, I then went on the advanced course which is similar but more advanced with a few different aspects of cleaning, sealing and repairing.
I have signed up to the monthly fee of £65+vat for optimisation and have not looked back, I can say it has generated £1000's of pounds of business for me. I am now hooked by tiled floors and want to learn how to treat repairs in marble, granite which advanced in tile restoration, it will take more courses and loads of cash but, it all started with Tile Doctor courses and the leads I have got from them, don't get me wrong you do get a lead like,
Mr Smith (no phone number)
mrsmith@hotmail.comLimestone floor needs cleaning.
So I send them an email and you get no reply note it as not interested on the system and move on.
The other thing is when your on a job and your stuck, you will have Russ's phone number so you can call for help, if your like me (a pain in the arse) I ask alot of questions some may be silly but that's how you learn, don't ask don't get.
All in all Tile Doctor works for me and I have no regrets and would recommend the course to anyone.