Oliver Murphy is the guy's name. He has a website with loads of useful tips and stuff on the Applied Maths course. Another good tip source is thephysicsteacher.com website.
I'm just finished the Leaving Cert having done Physics Maths and Applied Maths all at Honours level. They go well together and I found that the mechanics part of Physics barely needed to be studied at all because you're doing it in such detail in the App Maths course.
I was expecting an A1 in all three but of course there's never any guarantee. Physics was grand, Maths was two points off out of six hundred but it'll prob go up on recheck but App Maths dropped a full grade because I read the easiest question on the paper wrong. Goes to show how easily things can change in the LC! So for anyone taking up Applied Maths, good luck, cos its not easy.