Larousse Student Dictionary. This was my very first book I purchased to aid in my learning. It is thick, filled with a lot of info. It actually has an English-French and French-English side. It has since become not my favorite, as I have discovered it is not set up in the most easy format.
Easy French Reader: Second Edition, by R. de Roussey de Sales. This is a lovely book, my first book actually IN French. It is just filled with small little stories, some about fictional characters and some non-fictional. It is basically a beginners French reading book. I was so incredibly surprised and elated when I discovered that I could actually read most of the first few passages!
Four French fairytale books. I cannot find an author anywhere on these, but I purchased them very inexpensively on Ebay. I have the French versions of Rapunzel, The Little Mermaid, The Little Tin Soldier, and The Brave Little Tailor. At one point I could actually read through The Little Mermaid.
Berlitz French Phrase Book & Dictionary. This is my favorite French book I own. There is so much information in this tiny little book, and organized so incredibly well. Plus I love that the pronunciations of all the words are give in parentheses after the French words, phonetically with English. This book makes studying super easy, love it!
The Ultimate French Review and Practice: Second Edition. This is my most recent French book I've purchased, and haven't really done much with it yet.
I am not sure yet if I will be dipping my toes back into learning French right now, but if I do, I'm sure you will hear all about it!