I have no clue what a transistor can do and how to use it in a circuit or even what for. I know that if i look at the flat side emitter is on the left base is in the center and collector is on the right, I think.
have you tried google?
have you tried google?
I always look at transistors
I always look at transistors as a way to separate voltage flow from the delicate controls.
But yeah, google will explain it much better than I can blabber on about 
Always look up the datasheet
Always look up the datasheet as the pin layout could possibly be different. just lookup the code, say like 2n3904.
This is a helpful page as well.
I’ve mainly used mine as switches to increase the current flow vs a uProc pin that is usually rated very low.