I'm a blender artist trying my hand at game design. I am terrible at programming but have found a great teammate. However I'm wondering about learning programming in the future I've tried out Unity but am not bound to that engine. Advice would be great.

Before you jump straight into programming to make games, I'd suggest you get familiar with the basics first. If you want to stick with Unity, try some online C# courses, even the Microsoft Tutorial on C# is decent. Once you get the hang of Classes, Functions and all the neat stuff, you should be comfortable enough to figure out Unity.

If you don't want to stick with Unity and C#, other popular languages are for example Python or Java. 

https://www.codecademy.com/ has some neat tutorials on getting started with a few languages aswell!