Have a look in the Articles section on here as there is an article about choosing the right training course.
Also in the Links Directory there are loads of training providers listed.
Contact as many of them as you can and see what they can do for you and choose the best you can possibly get. Dont just look at the basic price but ensure you get the best value for your money - ask what is included in that price.
Also do a search on here for some of the big names - Creative, EZ Flow, NSI etc. and also training and see what has previously been said.