how to quickly develop your online business?

That's a pretty broad question and I think it kind of depends on your business but there are some general pieces of advice I'd offer as I am trying to start an online business too.

1. Social Media - find your 'voice' or 'brand' and how you want to appear to your audience? What kind of vibe do you want to give off? A super professional vibe like Apple? A playful vibe like Netflix? A sassy vibe like Wendy's? Make sure you post consistently, engage with all your followers (likes, comments etc.).

2. Aesthetically pleasing store - Look at competitors and see what they're doing. Not to copy exactly, but just to see what kind of vibe their stores have. What are they doing that you like? What are they doing that you don't like? What do you WISH they were doing?

3. Capturing emails - Offer people discounts for signing up to a newsletter/email database then you will be able to email them offers, sales, early access, etc.

It really depends on what your online business is though.

You have to go all in and give it your all.

 

I started my internet business by creating my own small website. In parallel, he created pages in social networks and placed himself on different marketplaces.
And only after 2 years I felt the first good profit.