I have come across a few people who aren’t really sure what they get with their O365 package.
The best way to check what apps you have access to is to login to www.office.com
Then you can see what apps you have available in tile form however if you want a full list click on the ‘Explore all your apps’
You will then get a list of all your available apps in alphabetical order with a handy ‘Learn More’ on the right hand side.
Any questions just ask!