We are trying to put our volunteer orientation (and eventually some of our trainings) on an online platform that volunteers could access from the comfort of their homes. 

Has anyone used one of these platforms before? or had any success with this kind of tech transition?

We are using Thinkific right now, but it's not quite meeting my expectations. 

Thanks Liza! We made some tweaks to Thinkific and it seems to be working better now. Another division of our agency purchased the "pro" version for one of their services as well, so we're in good stead. Thanks for your ideas!