Are authorized user tradelines legal? How legitimate tradelines work, how they differ from CPNs and credit identity schemes, and red flags to avoid.
The difference between authorized user and primary tradelines, how each affects your credit score, and which one makes sense for you.
Why you should review your credit reports before adding a tradeline, what errors to look for, and free and low-cost tools to dispute them yourself.
How long it takes for an authorized user tradeline to post, how statement dates and reporting cycles work, and how to check that it posted.