Basis certification help needed

Hi All

I am new to these forums.

I am a fresher in Basis Admin and just finished my online training course. Now I want to practice on my own. My 3 questions:

1- Can you suggest me any good website to get licensed SAP access for cheap?

2- What exam do I have to take for Basis Admin certification?

3- What is the material for this exam and where do I get it from?

Any help is appreciated

Thanks All

Adi