Hi Keith,
I must say that I'd rather be looking for a free solution. The thing is that I've been studying this way for the last few months, I mean looking on the internet on many websites and reading a lot of online literature to find logic explanations to all the questions I had (I must say that I've been amazed by the very detailed information one can find on the internet about very technical things). When I was unable to find a clear answer I posted a message on pprune.org and I always got a very detailed answer from your part or from others.
This way of working gave me very good results at the first round of exams,... and I must say that I learned much more than by reading passively a book (which I have also done). However it consumes a lot of time.
Anyway, I might be interested by your stuff, where can I find more information about it ? How much does it cost and can I have a demo version before I buy it ?
Thanks Keith.
Have a good day,
Emmanuel.