Fonts

https://fonts.google.com/

https://www.fontsquirrel.com/

https://www.dafont.com/

https://fonts.adobe.com/

Color

https://coolors.co/

https://color.adobe.com/

Photos and Textures

https://www.pexels.com/

https://unsplash.com/

https://texturelabs.org/

Stock Video

https://coverr.co/

https://mixkit.co/

Sound FX

https://www.adobe.com/.../offers/AdobeAuditionDLCSFX.html

https://mixkit.co/

https://sound-effects.bbcrewind.co.uk/

Music

https://freemusicarchive.org/

https://mixkit.co/free-stock-music

Ps Brushes

https://mediamilitia.com/

https://www.brusheezy.com/

Moodboards

http://www.gomoodboard.com/

Logo Research

http://logobook.com/

https://thenounproject.com/

Mockups

https://mrmockup.com/

https://unblast.com/

Portfolios/Inspiration

https://www.behance.net/

https://dribbble.com/