There are three ways to post to Instagram from your desktop:
I bought the Grids app since I found it most reliable for my needs. What’s your favorite?
For more details on how to do this, check out this post on SoftwareHow.
Linking Your Instagram to WordPress
Another cool thing you can do with Instagram is to display your feed on a WordPress website. As I discussed in my article on the subject, there are several reasons why you would want to do this.