When it's unrendered there's only one solid color for the mesh as opposed to the red and blue stripes, this is because the textures for the model only show when the shaders are active. I had trouble deciding between red or blue for the unrendered view. You can see the red and blue colors unrendered if you set the color to texture in the viewport but i usually only make the textures after the model is near 100% completion.

@Mechanicalanimalanimations oh ok

Depends what you are making i suppose, something like a chair is fairly simple to make but characters and creatures can be quite complex. I find faces of people and creatures to be one of the most difficult things to pull off in 3D. I'd say it took me about six years at least to start producing good results, but i was just messing around and having fun for a lot of that time. I think if a person takes it seriously from the start they would see results sooner. I'd say it's not as hard as it is time consuming and learning it is mainly a matter of patience.