SOME MORE FUNCTIONS

Some more important concepts to study functions:

mathsisfun.functions-odd-even  

mathsisfun.functions-increasing

mathsisfun.functions-maxima-minima
PRACTICE
mathopolis.com/questionsfunctions-odd-even
vitutor.com/calculus/graphs/increase_decrease   

Here, you'll find some useful graphs, so that, you can try to study their functions.

mathsisfun.functions-common

But, remember that for a complete study of the function you'll have to wait one more year. 

To graph functions, you can use this link (or another one you like better):

meta-calculator