Being a product designer comes with a host of challenges. And those challenges range from the purely technical—such as wrangling a thousand different device sizes—to the intimately personal—such as creative burnout.
https://www.invisionapp.com/blog/7-free-resources-every-product-designer-needs/
* versioning for different devices can turn patient product designers into raving madmen.
* Screen Siz.es
* Sketch App Sources
* Nailing the right look and feel for your brand, or your client’s, is essential to any design process.
* Niice
* Typewolf
* Pttrns
* Flat UI Design
* FindGuidelin.es