Help regarding PM Module

Dear All,

I am into MM module & would like to learn PM module.

Please note that

I dont have experience or practical knowledge in PM module hence please advice how to start with ?

Can anyone share some links or materials regarding the PM module esp the Process Flow in PM.

Materials with the basics structure & Process flow in PM Or if someone can explain the PM process flow like the PR-LIV flow in MM it will be really very helpful.

I have checked the help.sap reference but since I am new to this module & dont have much exp finding it difficult to follow.

Expecting your valuable replys.

Thanks & Regards,