Hey Aisling, I'm an engineering student and I have notes and two mock papers that I give to all my students when I give grinds. To get 510 points grinds in maths would be advisable as it will make up a huge chunk of that 510 if you put the work into it. If you're interested let me know, I have the best rates in Dublin!
@aislin1998 you can get all the mock papers from over the years on pastpapers.ie for €1 a pop. That said however, official SEC papers are the only true indicators of the standard required on the day. As for useful websites, studyclix is your best bet but there are other ones like maths tutor.ie that cost money. I have no experience of them but they seem to have a good reputation. Best of luck!
@michael.ryan.712714 unfortunately I'm not from Dublin but I'd be interested in buying some of your notes if it's possible to exchange them by email or by post and I could set up a paypal transfer or something