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Resources by other creators on using open source technologies
Stephen offers a simple tutorial on getting Ubuntu onto a USB drive on Windows.
Inkscape & GIMP
Logos by Nick offers a wide variety of tutorials on common graphic design tasks.
GIMP = Adobe Photoshop®
Inkscape = Adobe Illustrator®
Lawerence runs a successful technology services company. He does reviews and tutorials on open source business applications such as FreeNAS (media server) and FreePBX (telephone management). He also does videos on running his business.
Jupiter Broadcasting has been doing Linux and Open Source podcasts and Youtube videos for years. Check out their latest shows: Linux Action News & Ask Noah.
The Frugal Computer Guy does great, comprehensive videos on LibreOffice. You can find great videos learning the different components of a modern suite.