You can look for the following and maybe more:
https://nextcolony.io/faq answers basic questions
https://steemit.com/@jarunik he makes these nice graphical overview of core functions
https://nextcolony.fandom.com/wiki/NextColony_Wiki the Wiki is a addition to the FAQ
and sure Discord Channel to talk about all questions
Bounty is ongoing for new explain-Videos
hope that helps a bit
a complete tutorial video must be available in dtube or YouTube.... it's really helpful for many users....!!
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Please check the bounty for exactly that in our discord.