I would suggest u read some books and watch a couple of YouTube videos in your chosen niche to get an idea of what it is to be in that industry or probably getting skills through the books and free videos.
After that u can choose to help someone grow his business like am doing currently or start a business from scratch to get enough experience.
But,u don't need all the experience stuff to know an industry first, u just need to learn about it and be willing to learn. That is all!
For example,I am learning all I can about ecommerce through books and interacting with store owners and giving tips which helps them even though I don't own a store now. So just be willing to learn and learn.