Here is my poorly organized list of Design Resources. There, horder status unlocked. Also, this is my reference doc, if anything, so I will be adding to it when I see new things.
You can probably find all this with a google search. But if you can not, I have googled it for you.
If you are into design, you probably need this — http://agiledesigners.com/
Design Samples and Patterns:
http://www.mobile-patterns.com/ — For mobile UI Samples — iOS.
http://www.pttrns.com/ - Another mobile UI patterns repository for iOS.
http://graphicburger.com/ — UI And Design Kits, buttons, PSDs.
http://www.dissolve.com/ HD Video resourses that don’t suck. (for video BGs especially)
http://www.goodui.org/ — For when you are in doubt if you are doing it right.
http://app.itize.us/ — Currated well designed apps.
http://wearui.co/ — Wearable UI samples.
http://ui-cloud.com/ aperantly the most extensive UI database — maybe not as useful due to noise.
http://thepatternlibrary.com/ Amazing BG patterns
http://subtlepatterns.com/ Subtle Patterns
http://codepen.io/patterns/ Collection of design patterns and code samples.
http://eskimoblood.github.io/gerstnerizer/ Make your own patterns.
http://www.chartjs.org/ JS Charts, what else do you need?
Sketch App Resources:
http://pngify.me/index.php?c=Application Application icon creator
thenounproject.com — any icon you can think of. In SVG (!) and imports phenomenally well into Sketch App.
http://mapglyphs.com/ Map Icon Font
http://glyphsearch.com/ MoAre icons!
http://roundicons.com/ MoAaare icons!
http://iconmelon.com/ Icons gimme gimme!
Stock Images That Don’t Suck:
Thank you Dustin Senos for these: https://medium.com/@dustin/stock-photos-that-dont-suck-62ae4bcbe01b
Embed your screenshots into natural product shots:
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I guess that’s it.