You will need to make sure you can log into Adam first. If you have not done so yet, go there and follow the prompts from the parent login page.
Once you have set up a password for yourself, you will be able to log into Moodle. Use your ID Number as your username and the same password you used for Adam.
If you forget either of these passwords, you will need to go to ADAM to recover it before using Moodle.