Hi Martin,
I've found that Robert Anue's Zebu cards are also very good for learning Hypnotic language patterns. Here's a link to his site Zebu Cards - Hypnotic Language Patterns - Ericksonian Hypnosis (I just checked to see if they were still for sale!)

I think that language patterns are something that need to be practiced, and practiced and practiced and ... you get the idea! I've heard people try to use them who were far from fluent and who came across as complete morons.

I'm not sure if you've done some training in NLP but if you've done Practitioner training have you've probably got all the patterns in your manual. My best advice is to take each pattern and just try applying it to various contexts. You don't even have to do this in the context just think about how you could use it if you were in that context so that you start to feel comfortable with them.

Looking at your last post in response to Michaels request for more information,
I'm not sure that hypnotic language is the answer and I also wonder how ecological it will be for the sales people to do more...
Hope this helps,
Steph