You're welcome. :)
Slack Communities
The best Slack community to join for UX is Designer Hangout. Ask for an invite here: https://www.designerhangout.co/
Other good Slack communities are:
Candles - https://slofile.com/slack/withcandles
MixedMethods - https://www.mixed-methods.org/community1/
Since you are doing user testing first, you can go through this User Testing class by the University of Michigan for free on Coursera. Mark Newman is a really good instructor:
https://www.coursera.org/learn/evaluating-designs-with-users/
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