the problem is that that is the exact same tutorial I'm coming from. I can't seem to get the createdb or sequelize db:create commands to work because I keep getting

"password authentication failed for user"

Yea. That means , your sequelize configuration is wrong. When sequelize tries to access the underlying Postgres database, The password is using from its configuration is wrong and Postgres will reject it. Check your sequelize config and make sure you are using same username and password as when you are installing your Postgres database.

Everything works fine in the cmd. I was even able to connect successfully to a database in the pgAdmin. It's just when I come to the directory of the express app and I try to use the createdb sequelize command i get the error:

"password authentication failed for user"