Where do i find materials to learn and improve my designs?

I have been searching for support on learning how to make complications work, also for programs recommended to work with graphics thanks for helping.

For math and complications I use:
Facer Documentation: http://docs.facer.io/
Wolfram Alpha: http://www.wolframalpha.com/
Embedded: http://www.embedded.com
Windows calculator

For art:
Paint . NET: https://www.getpaint.net/
Windows calculator

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Thank you for the info. I do Really appreciate it :blush: