Even if you are interested in AI for its own sake, you may want to have some goal in mind when reading. Go to the library now, make copies of all the AI Finals papers, and check through them. You may not be able to answer the questions yet, but you should review them repeatedly as you go through the tutorials, lectures, and practicals.
You should also practise writing sample answers well before Trinity of your third year. Bear in mind that a lot of the information you'll be given is intended to put the subject in its historical context and to present basic principles. You won't be able to answer Finals questions merely by replaying it verbatim.
Finally, you should supplement these tutorials from lectures or other sources if you want a good chance of being able to answer questions on symbolic AI. The idea is that if you take the complete set of four, you'll get detailed coverage. If you take just the two tutes here, you have probably elected to cover one of the other parts of the syllabus in depth: the main part of these notes will then give you a broad but shallow survey of symbolic AI. I have however added a number of footnotes with suggestions for optional further reading, should you want to follow up a topic further. The footnoted references which I think contain the most useful material are starred.