Instagram Marketing is almost similar to Facebook Marketing.
Facebook advertising is an important way to connect with your audience on the world’s largest social network. Facebook ads are all about getting your message in front of exactly the right segment of those people. The people who are most likely to actually want your products or services
If you want to get the best results, it’s important to understand the different Facebook ad types and targeting options before you dive in. If you do not have a measurable keyword search volume in google for your brand keywords, it is recommended to run Ads on Facebook. How much amount to spend on Ads entirely depends on your Niche Market. You can start as low as possible with a few dollars.
Hope this helps, I generally follow kuware.com for Marketing related Information.