Sketch 3 is made for UI & UX designers like you.
Sketchapp TV offers free Sketch 3 video tutorials and design resources (freebies) like iOS and Android UIs, icons, web designs and device mockups for Sketch 3 by Bohemian Coding. Sketch 3 is super easy to learn, has a beautiful, yet simple interface which allows you to create stunning vector graphics and has a great community of designers who contribute many freebies everyday.
The capabilities with Sketch 3 are unlimited. There are so many Sketch 3 plugins and ways to improve your design workflow. Sketchapp TV is one of the biggest Sketch communites and provides more than 400 free Sketch resources and more than 60 Sketch 3 tutorials about UI/UX design and animation.