Vivek,
Like mentioned earlier by TW and Laksmipathi, internet is the best option. All I can do is suggest an approach. Break down your task into smaller pieces.
Lets say, one of the tasks is that you want to accomplish is creating a Sales Org.
You may then want to explore the following:
- Read and understand what is Sales org.
- Draw an structure on a paper.
- See that you have all the elements of org structure to create a SO?
- Find out what is needed to create a SO?
- Is there any configuration needed?
- What is the SO assigned to?
- Is there any accounting links?
etc...
I would suggest that, then start looking for your answers on internet. You can apply a similar approach to whatever you want to do.
Hope this will help you navigate you way.
anurag