Best way for online PPT presentations?

Hey Warriors!

I was wondering which is the best way to make an online PPT presentation?
webinars?automated webinars?Simple videos?

Let me explain my situation....

I am in a Network Marketing company which's product is cloud services.So I made a PPT presentation about the product and the business oportunity.My thoughts are i could use a webinar to make that presentation 1 particular day a week and send all my contacts there to watch it.

People that will sign up under me will send their contancts to my presentation and then sign them up under themselves.That way no marketing training is required,all they have to do is send their prospects to my presentation and then sign them up and that procedure will repeat itself many times.

My questions are::confused:
1) Will I be able to have a webinar when the attendees reach 10,000?What if they become more?
2) Since the presentation will be the same every time,wouldn't it be better to use an automated webinar service?

Please be kind and respond to those questions without comments like "This is a pyramid sheme,This is ponzi blah blah or whatever."

Thanks for your kindness
Ken T.