If you write code to SQL Server then you might be interested in this: at the end of 2017 I wrote a tSQLt tdd training course which has helped over 300 people learn both tSQLt and how to apply TDD practices to their SQL Server T-SQL development, you can join the course at https://courses.agilesql.club. The course is free if you are happy to wait 10 weeks to complete it, with 1 lesson being made available per week - if you are in more of a hurry or you would like to help support the project you can purchase the course which makes it instantly available to you.
My session yesterday was recorded, apart from the fact that me and mark were having a chat for about 25 minutes before it kicked off it seemed to work quite well:
Skip forward to 24:32 to get to the actual content.
The lovely Mark at SQLRelay has edited the video and put it on youtube so you miss our chat at the beginning:
Any questions please shout!