So first off, it's not horrible for a first attempt. I know it can be difficult learning on your own. I started teaching myself 3D about 3 yrs ago, and figuring out what you need to learn in what order can be tough. My first suggestion since you lack fundage is Mari Non-Commercial license. I forget what the limitations are…
It's rough and nothing really special (I'm a better painter than currently a texturer) but it is my first serious attempt at texturing (mainly because I finally figured out a working ZBrush-to-Maya workflow pieced together from all the online workflows that IMO often contradict each other or throw in some 3rd party…