what are the packages

express is a lightwight web framework for nodejs

cors cross origin resource sharing - allows ajax request to acess resourses from other hosts

mongoose makes interacting with mongodb easy

dotenv loads env variables into a process env, env files are stored in the project

Node mon (globally installed), restarts node/sever when changes are detected

create sever

/routes
- /exercises.js
- /users.js
/models
- /exercises.model.js
- /user.model.js
server.js