I have been slowly forced to learn Scada, where to begin?

my 1st option is take look for SCADA manuals which installed in your site. The manaul will have lot of information and day to day activities in addition is great resource for troubleshooting.

i have attend some coerces where the slid is almost snapshot of manuals.

on other hand i have asked question about resources of information for DCS etc.. in here. Many people have given many nice answer. 

http://www.bayt.com/en/specialties/q/268628/what-are-the-websites-you-refer-to-for-finding-answers-training-update-topics-or-reference-for-instrumentation-control-dcs-plc-automation/?feed=activities