Which book is the best to learn Japanese grammar?

I've just started to learn Japanese—at this point I've learned the kana and I am now working on kanji. I've also purchased an English-Japanese dictionary for reference. What I'd like to know is which book is the best for Japanese grammar, or any other essential book for beginners—preferably meant for self-study because I don't take any classes or anything. I'm not really sure how to go about learning this, but grammar seemed like the next logical step...please correct me if I'm wrong. Any and all book suggestions are appreciated. Thank you!