Design is more than just pretty pixels (no offense to pretty pixels). It's about user experience, a deep understanding of product, and mastery of tools like Adobe Photoshop and Microsoft Paint.
These design resources will help:
: Organize, share, and use all your visual assets in one place
: Create stunning product screenshots in seconds
: A gorgeous, focused, drawing application for the iPad
: Get 200+ iOS & Android vector device mockups for Sketch
😎 Design Inc
: Find high quality design work done, on-demand
: Like Microsoft Paint in your browser (have fun)
For more, follow the Design Tools
topic on Product Hunt.