Hi! I have been learning Georgian from არმაღთი books from
http://geofl.ge the page was already mentioned above. But it is a little bit unintuitive to navigate on that page. On the website you can find textbook (წიგნი) and exercises book (რვეული). And some stuff does not work at all, like dictionary. But when you navigate through 'learn' and then 'manual' then you can choose the desired level and you can download PDFs by clicking blue icons view. Or you can go to the particular chapter and then you can see the chapter accompanied with audio files.
I hope the direct link to the textbook is
http://geofl.ge/img/manual/bfull0.pdfBut to not be overwhelmed by the book it would be great if you have a tutor to explain some exercises or grammar topics. And I find the book a little bit chaotic and some topics are introduced pretty fast e.g. The A1 deals with present simple and suddenly in A2 both past simple and future simple are introduced at once with just few examples.
I made an exercise on memrise.com app to help me with A2 book but it covers only chapters from 1 to 4 and I don't have much time to update it.
http://www.memrise.com/course/1294801/georgian-a2The other book that I use frequently to understand the Georgian grammar is "Georgian a learners grammar" by George Hewitt. You can easily find a copy online.
Hope it helps ;-) if you have any questions you can write to me here ;-)