ACL: user & Groups in CakePHP 1.2 - it's easy

After a long searching in web, I found this page.
All steps about user/group ACL/ACO in CakePHP. From creating table to use this.
Yes, You must know something about CakePHP, other way you can find this manual to hard for understanding.

So, have a nice reading the article Setting Up User Groups With ACL/Auth in CakePHP 1.2
And I'll learn it too. After, may be add some comments to this manual.