Are.na is a moodboarding website like Pinterest used mainly by architects and designers.

this are.na site like it because there's a lot of stuff haven't seen and a lot of interesting stuff. The amount of information is great.
There's a lot of information out there, and you're just a board click&Scroll away from making a new discovery.

https://help.are.na/docs
https://medium.com/@jilwright/using-are-na-for-research-2b9274c8429
https://www.youtube.com/watch?v=M4OfWJL_t-I
https://www.youtube.com/watch?v=oCnyBheo7BU
this are enough. But i are some more tips.
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Tips for searching are.na site

1. in the search Are.na tab on the top left, search for the words you want, for example: 'texture, HDRI, graphic design resource.. etc'
Try searching this way (can also find it this way!) 3d model, HDRI, Resource, Design Resources, png, luts, vfx, free site.. etc words

https://www.are.na/search?q=%7B%22term%22%3A%7B%22facet%22%3A%22stock+video%22%7D%7D

2. However, you only get 24 results, and here's why. Scroll to the bottom and you'll see a window that says “Showing 24 of 12879 results. Filter by type to see more.
It's exactly what it says! Filter by type to see more! Then change the Types setting from 'All' to 'Blocks' to 'Channels' and you'll be able to search for an unlimited number of results.

3. while in 'Blocks' setting, click on the image and on the right side you will see 'All connections', 'Blocks with this URL also appear in' buttons to start exploring the vast resources, references!

Good examples :
https://www.are.na/kurt-snell/cut-out-people
https://www.are.na/leah-hughes/tools-n1bcns4h8oc
https://www.are.na/search?q=%7B%22term%22%3A%7B%22facet%22%3A%22texture+%22%7D%2C%22where%22%3A%5B%7B%22facet%22%3A%22ALL%22%7D%5D%2C%22what%22%3A%7B%22facets%22%3A%5B%22BLOCK%22%5D%7D%2C%22fields%22%3A%7B%22facets%22%3A%5B%22ALL%22%5D%7D%2C%22order%22%3A%7B%22facet%22%3A%22SCORE%22%2C%22dir%22%3A%22DESC%22%7D%7D
https://www.are.na/search?q=%7B%22term%22%3A%7B%22facet%22%3A%22texture%22%7D%2C%22where%22%3A%5B%7B%22facet%22%3A%22ALL%22%7D%5D%2C%22what%22%3A%7B%22facets%22%3A%5B%22CHANNEL%22%5D%7D%2C%22fields%22%3A%7B%22facets%22%3A%5B%22ALL%22%5D%7D%2C%22order%22%3A%7B%22facet%22%3A%22SCORE%22%2C%22dir%22%3A%22DESC%22%7D%7D

4. or you can search like this in a search engine “word of your choice” site:https://www.are.na/
https://yandex.com/search?text=Graphic+Design+Resources+site%3Ahttps%3A%2F%2Fwww.are.na%2F&lr=21368

5. If can't site 404 error, stop translating site and try again.