Where to start to learn Sharepoinrt

Question

 I am working as oracle programmer. We also have  oracle applications. And we already have  sharepoint in our company using for intranet & file share.

 

Yesterday my manager came to me asking for few reports  (Top management)  to access from share point. He want to make share point as central system for management.

 

I never worked with sharepoirnt other than accessing as intranet in our company.

 

Dear  Experts, Can i have basic learning - proper one to learn share point - from basic level to progress . What are the minimum required knowledge to learn sharepoint.

 

Thanks in advance