"I'm kinda old. 28 years old. I worked as a videographer and in sales up until now."

Wow, I'm shocked to hear that 28 is "kinda old".

Most of my life has been spent programming computers. Every few years the computer languages change, the emphasis changes, everything changes.

At 21 I was programming very low level stuff - disc controllers for computers.
At 23 ish I was programming test software for process control computers.
At 26 I was a Team Leader for a CAD programming team.
At 28 I moved to another country working freelance on a system I had never worked on before using a programming language I had never seen before.
At 29 I changed to another job, evaluating software and giving presentations in another country.
At 30 I had a new job programming at a very low level - databases.
Then I moved to another job working for the company that made the databases - all low level stuff.
Then they asked me to go on a training course and I switched from low level programming to building database applications and teaching other people.
Then I changed to a new job writing computer applications for a mobile phone company.
Then I changed to another job writing complex stuff for delivering packages using a language I had never used before.
Two years later I changed job again working on something different.
Eight years later I was using differrent languages and doing all kinds of stuff including web design.

I was probably 35 or 36 when I started playing with a program called Lightwave 3D. I played with it ever since, off and on, now I have MOI 3D.

In the meantime I have worked with perhaps 30 or more new clients, changing what I do all of the time.

The world is changing fast, what you learn today will be obsolete very quickly, but will help you move to something new. That will be the pattern of your life.

It shocks me that you think you are too old at 28 to learn new things. I have done that all my life and still do.

NEVER think you are too old to do new things, never.

I also think that most 3D artists have never set foot in a University.

Good luck!