A Linux/Windows/OSX server that's always running. (I host this program on a free google cloud debian server)
A Discord bot user (Create one here)
An Instagram developer account (Get one here)
Install node.js (Download here)
Navigate to the install folder with cd
Run the command npm install
Replace each line in config.json in a text editor with the accounts you wish to monitor.
Run bot.js
(Optionally with something like PM2)
Invite the discord bot to your server using the following link (replace BOTCLIENTIDHERE with your client id in general info):
https://discordapp.com/oauth2/authorize?client_id=BOTCLIENTIDHERE&scope=bot&permissions=0
You're good to go!