How do I change my iCloud password

If you know your current password and want to change it, see: Change your Apple ID password - Apple Support

iCloud uses your Apple ID and password. If you only have one Apple ID, it would be the same ID and password as you used to log into this forum. If you have another and have forgotten the ID or password, see the following:

If you forgot your Apple ID email address or phone number - Apple Support

or

If you forgot your Apple ID password - Apple Support

iCloud uses your Apple ID and password. If you only have one Apple ID, it would be the same ID and password as you used to log into this forum. If you have another and have forgotten the ID or password, see the following:

If you forgot your Apple ID email address or phone number - Apple Support

or

If you forgot your Apple ID password - Apple Support

or if you know your current password, see: Change your Apple ID password - Apple Support

I want to change my iCloud password, which is different from my Apple ID. How do I do that?