Understanding Basic Irish Grammar Using Scribd
I always struggled with understanding Irish grammar until I came upon a site called Scribd (scribd.com) where you can read books online and view documents for free. Anyways some publisher uploaded one of their books called Irish Grammar Book here s the linkhttps://www.scribd.com/doc/221735005/Irish-Grammar-Book
If you are on desktop you will have to download it after a few pages but on iPhone you can read the whole thing
It gives a great, detailed explanation of Irish grammar
Just so you know, the publisher didn't upload it. Someone else uploaded it, so it's not entirely legal....That book is good, however, but, in my opinion, it's certainly not the best one out there.
I like Stenson's two, published by Routledge. They're workbooks, so give you a chance to practice what you learned as well. I also the Christian Brothers', though the English version isn't nearly as detailed as the Irish. Online, just use Gramadach na Gaeilge - it's free.