This is an excellent question, I assume you mean digital education platform. Of course the question of starting is very broad. Please feel free to reach out for me to help you conceptualize, start and implement your plan. I highly suggest that you figure out the following.
A) What is the product or what are the services you want to offer? what makes them unique or attractive to the clients? what is the value of these to the clients? how are they different from competing services
B) How will you market the product and close a sale with end customers? This really matters as many startups fail because they cannot sell or marketing is more expensive than the product price. I also suggest considering pre-sales and community engagement before launch
C) Operations- how will you create the material or source the educational material that will be presented? Where will you find talent to support you (consider freelancers eg from Fiverr or Upwark in the beginning?
D) How will you finance the creation? Can you bootstrap your business model to something simple and not cash intensive? Can you use crowdfunding?
E) What is your overall business and financial plan? Happy to help draft one
F) Implementation- how will you implement it all and make the final tweaks such as to branding and messaging?