Welcome!
Regarding the use of filters; I think most people here will tell you UV filters are of little use in most situations on digital cameras. Yes, they protect the front element of the lens, but the price is a potential degradation of the image quality. Putting an extra layer of glass in front of the lens will distort the light somewhat, even if it's good quality glass. But as long as you know that, no problem in my opinion. Just remove it in any situation where it might cause reflections or flare.
There are several long threads on the forums discussing this, and they usually conclude with hoods being as good (or better) at protecting the lens. And improving the image quality at the same time.
As for asking here before buying a new lens, that can turn out quite expensive
People here will always recommend what they think is best, no matter the cost! After all, it's not their money they are spending