Mate,Just go and buy the 3 A & P books with all th Q & A's(avail in all good aviation bookstores).Plus look for a school or some recognised place where you can do your exams and prep for your oral and practical.I went to a place in NY on Long Island called American Airman School.It is not really a school as such but you can sit your exams there and have there own examiner for the prac.
Learn the books parrot fashion before you leave home,as you can sit your exams in one or two days.This really freaks the yanks out,but as you will have had such good training it wont be a problem.The theory exams are pretty easy.As for the prac,you will need two days.One for the prep and one for the actual testing(plus US$ 300).
Your minimum time needed would be about 4 days.
I hope this helps.
