Nice job!
As Niels said I'm learning dutch at the moment but I'm sure you're better than me as I'm not very good. Have you seen
this site?
You can email them and get a printable pdf of a grammar book for only 3,75 euros. It's basically all their grammar sections in one handy file. I got mine printed and bound today and even after what that cost, its still a damn sight cheaper than buying a textbook and it's very useful (though the pronunciation part is quite hollandic).
Also I've joined their
forum where you can practice your dutch and have people show you the corrections, swap hints for learning, have conversations etc. It's a really good resource.