Registration on AMO is not required if you simply want to download and install public add-ons.
You only need to register if:
- You want to submit reviews for add-ons
- You want to keep track of your favorite add-on collections or create one yourself
- You are an add-on developer and want to upload your add-on for hosting on AMO
Upon successful registration, you will be sent a confirmation email to the address you provided. Please follow the instructions there to confirm your account.