What do you think of these grammar books?
Christian brothers new Irish grammar: http://www.amazon.com/New-Irish-Grammar-English/dp/0714412988/ref=sr_1_1?s=books=UTF8=1444942935=1-1=christian+brothers+irish+grammar
Irish Grammar You Really Need to Know: http://www.amazon.co.uk/Irish-Grammar-Really-Need-Know/dp/1444189573/ref=pd_sim_14_7?ie=UTF8=15MW8P5AJM2CY6QG60Z9
Go with the Christian Brother's one. It can lack explanations at time, but it's the best.
Also, I wouldn't classify Learning Irish really as a grammar book; it's much more of a textbook that a grammar reference. That said, if you want to learn Connacht Irish, it is essential. It is by far the best book out there to get the basics of the dialect down. If you don't want to learn Connacht Irish, well, it'll be nice to see how it's done, but there's other ones better for particular dialects.
And I'm hesitant with the Teach YOurself one. Their material quality has gone down a lot over the years.
Go raibh maith agat. I think I'll get the Christian Brothers one then. Do you know of any books that deal specifically with the Ulster dialect?
Barbara Hillers has some stuff on her website. Though it's not 100% Ulster Irish (e.g. it uses ní instead of cha), it is more than you'll get mostly else. However, to really reach material, you'll have to read in Irish, and use An Teanga Bheo: Gaeilge Uladh. I have the Connacht one, and it's a great little book, so I do recommend the series. It's quite possible there's some English-language stuff, but I don't know it.
Which TY book(s)? My understanding was that the (complete) grammar was decent, the course somewhat less so (though I used the old version of the course when I dabbled in Irish however many years ago). And it looks like Learning Irish has been significantly updated/improved... the edition I had (from the... 70s? 80s?) was kind of awful. Good to know about the dialect aspect, though.
While we're at it, any thoughts on: http://www.amazon.com/Speaking-Irish-DVD-language-skills/dp/0071475621/ ?