Help with picking up derivative calculus (reading material sources)?

[ax3]

I have been asked to pick up derivative calculus over the weekend. I really do not know the first thing about calculus but i am a very quick learner. Basically ive left my textbook at school, so if anyone could advise good online material (probably starting with the most basic?)

Thanks.

 

[scree]

Read the wikipedia article on calculus.
That's what I would do.
Basic derivative calculus means you should probably understand:
limits
slopes of tangent lines / difference quotient
basic derivative rules: constant multiple rule, power rule, chain rule, product, quotient rule.
There are wikipedia articles for all of them.

P.S. Some say wikipedia is a joke; I have learned a lot of maths there and have never found it wrong.