Instant messaging is online, real time text conversation.
Video guide
Here is a Video from Microsoft from Microsoft about instant messaging in Skype for Business (1 minute 38 seconds).
This covers:
- Presence Indicators
- Sending an instant message
- Presence Information
- Setting presence manually
Please note that the student version does not have the telephone keypad.
Screenshot instructions
The same video accompanied by screenshots (scroll down the page)