Hello Nitin,
do you have any SAP skills already and do you have access to a test system? If yes start with the very basics.
- MRP-Tabs in material master data
- bill of material
- work center and capacities
- routing (standard routings first)
Create simple planned orders and convert them into production orders.
Schedule them, check for material and capacity availabilty, release the orders and
confirm the operations. Play with quantities and scheduling types, backwards, forwards.
Add ord delete operations ...
Make yourself comfortable with the principles of the processes make-to-stock and make-to-order.
Based on that you will get to know how the MRP run is working.
Regards
Matthias