The Online Trainers Academy (OTA), is an offering from the Personal Trainer Development Center (PTDC, american spelling for 'centre').
There are many, many ads for companies and individuals that will teach you how to build your online Personal Training business. One thing they all have in common is that they will make you 'loads of money' usually for 'very little effort'. Just pay the person to teach you how to do it the way they have supposedly done it - they made millions and so will you.
All your problems solved.
The way most of these methods work seems fairly simple, the first part is all about marketing. Build a list (subscribers), then constantly bombard people via as many social media channels as you can.
In all fairness everyone needs to advertise in one way or another - the question is do you want to spend all your time advertising on social media or do you actually want to work on your business?
The next part varies, there seems to be a difference of opinion, some will tell you to price really low - because "you'll be selling to hundreds of thousands of people so you don't need to charge too much". Or, it goes the other way "seriously overcharge for your service - lots of people do so it will be fine. Offer things like a spreadheet a 10year old could put together in 5 minutes and tell them normal price £197 for this amazing 'thing', but it's free today!" ...as long as they buy your product, within the next 10 minutes.
Just an observation but unless you work in marketing then there is a lot more to your business than just marketing!
If you want to skip my review and get your own idea of what the Online Trainer Academy is all about then click here.