Hi,
a) Sounds like you'd be a good fit for a SAP technical career - ABAP, Webdynpro, BRF+, BW etc.
First step is to learn ABAP, then get a job at a company that is using SAP. In any position.
b) There is an ABAP certification, but don't worry about that yet. It won't help you get a job.
c) You can do the SAP training, but it's quite expensive and the instructors are sometimes not great. SAP Help and SCN provide plenty of free tutorials - more than enough to get you started (and to see if it really is for you).
I can recommend SAP as a career. Never a dull moment!
Good luck,
Paul