You don’t need a mentor. And why limit yourself to one person? What if they turn out to be an idiot? You wouldn’t realize it for years because you won’t know any better.
I suggest actively and intelligently participating in the forums here as well as starting a training log. Follow other training logs and participate (intelligently) in those as well.
You’ll find a variety of successful people with different goals and different approaches. You’ll be able to glean information from multiple people and try new things on your own. If you look at the logs and posts of people carefully then you’ll be able to figure out their age and level of wisdom and then you’ll be able to choose who you follow a little better.
Ask questions. Don’t talk back or disagree with advice from people who are more experienced than you. Don’t take things personally. Learn and grow. This place can give you numerous “mentors” in the iron game without being reliant on one person. It may not be as personal or touchy feely as having a field trip buddy in real life, but I believe it can be more beneficial.
Lastly, learn how to use the forums properly. Learn how to tag people, use quotes in your replies, post videos, etc.