Patterns are not Free but Irish Crochet Lab is a place where you will find information, needed to learn Irish Crochet Lace. Free lessons that teach you basics of crochet also will prepare you for more advanced lessons in Irish Lace
Irish Lace Blanket, free pattern by Patons. x yds yarn, hook size 'J'. This is made with simple squares that are joined to make long panels; panels are then joined. It looks a lot more complicated than it really is.