How long should it take?

I think this is the right place for this:

I am new to Articulate, and new to building on line courses,  I'm actually a  nurse recently hired to Department of Education to help with the roll out of the new EHR.  I ended up creating how-to videos with screen recordings and now I'm creating quizes in articulate to go with the videos (cutting and pasting the screen recordings  into an Articulate presentation and adding the quizzes - teaching myself how to do it as I go along.)

Anyway, here's my question:  is there some rule of thumb as to how long the process should take?  I see there is a real mix of folks out there in the Articulate Community with a mix of kinds of employment.   I'm interested to hear your experiences. 

Thanks