NCS (National Competency Standards)
This site gives out tips for job seekers. It helps you prepare for licenses, interviews and tests.

NDSL (National Digital Science Library)
If you need to look up published research papers, this is the site to check out!

Unsplash
Download high quality pictures without any copyright issues.

Slideshare
Need help with your PowerPoint presentation? Read through and download PowerPoints made all around the world.

Presentation Magazine
Download from 70,000 FREE PowerPoint templates in a matter of seconds.

Open Office
No need to buy software. Use PowerPoint, MS Word, Excel, Korean word online!

Pixlr
If you are in need of quick Photoshop editing, do it at Pixlr!