Career in SAP for a Mechanical Engineer ?

Hi,

I'm a Mechanical Engineer who just started with SAP having 10 months of experience in PP module.

Presently I'm on working on.

1. Creation of BOM (Bill of Materials), for manufacturing of home appliance.

2. Rate Routing.

3. Production Version.

4. Making changes & corrections in BOM.

So my question is

1. How well can I make SAP as my career.

2. What are other things i can learn in PP module.

3. Is there any Course that i can do.

4. What other module i can learn.