Starting an online business takes some legwork. There are legal and financial hoops that you'll need to jump through. It's important that you consult with an attorney or your accountant before taking the plunge. But, once you're ready, starting a business online, even with little money, is not only a possibility, it's a stark reality.
The beauty of the internet is that you can quite literally launch a business and make money online with very little to no capital. If you understand the mechanics of online marketing, or if you're great at social media, you'll clearly find it easier. But you don't need to be a pro to start your business online.
Like anything else in this world, you'll either need a lot of time or a lot of money. If you have both, then clearly, you're ahead of the game. But most people have more of the former rather than the latter. But considering that time is finite and we only have a certain amount of it, using your time wisely and managing your timeproperly is crucial to ensure your success.