Anyone have experiences with online courses?

I spent 19 dollars on learning Arduino which I found at the gizmag

its a online course offered at www.udemy.com

Arduino Step by Step: Your guide to the Internet of Things

https://store.gizmag.com/sales/an-introduction-to-arduino-an-open-source-electronics-platform?utm_source=StackSocial+Deals+Newsletter&utm_campaign=262344ea9d-GM+Arduino+Beginner+Course&utm_medium=email&utm_term=0_bf74b34094-262344ea9d-297390049&mc_cid=262344ea9d&mc_eid=85d1a1b7ce#

https://www.udemy.com/arduino-sbs/?couponCode=C2XPZS4Z

I know there are books and mags, might look at some books too

I did TAFE IT certificates III & IV mainly on line.

I train, assess and administer online training courses. Like tamb, Cert III, IV & Diploma in business, aged care and hospitality.

Wanna do one, let me know.