I agree you need a book but there's a post on here 'Verbs conjugations new course - UPDATE' which has some grammar courses on here which I've started and have found that it's starting to sink in as they're not too complex or jumbled....
Whilst I absolutely agree that a grammar book is crucial if you want to learn French and reach some form of fluency, a further supplement I recommend is french.about.com
I head there whenever I need further clarification about some specific grammar topic.
For example I was learning about Direct Objects, and so I just looked it up and found http://french.about.com/od/grammar/a/directobjects.htm , which explains it all. Another helpful page is http://french.about.com/od/grammar/a/avoiretrefaire.htm
So basically, they have an abundance of really helpful information. I'm yet to come across topics they fail to cater for. Highly recommended! :)
My text from Uni was called "La Grammaire a L'ouvre" -- I'm not sure it would be a good resource for an absolute beginner, but for someone who has taken intermediate level courses, I can wholeheartedly recommend it. It had great charts in the back for conjugation of irregular verbs, including all the tenses. I think it's still in print.