E-learning platform / Which on to choose?

Hello all,

I wish to publish online course to teach agile methodologies in the field of Architecture and construction https://www.agilebim.org/

I am looking for an e-learning platform to store the video, the pdf and course and allow members to know each other.

Which platform do you suggest, so that it is both powerful, elegant, nicely designed and affordable.

See you

Sébastien