Show HN: Interactive lessons for SQL SELECT

Hi HN

I told myself I'd submit this to get HN's feedback on this side project when I finished it... but I kind of ran out of steam/passion to finish all the lessons and promote the site.

The primary audience for this was going to be business analysts and other semi-technical people that would get some value out of knowing how to write report-style queries in SQL. So I was only going to focus on SQL SELECT statements.

Once the app was "finished" and it came time to write the content, I had several realizations:

  - Teaching is hard  
  - I should have wrote the content/lessons first  
  - The lesson viewer could have been done differently  
  - SQL lessons should really have an interesting database to go with it  
  - I had a lot more fun experimenting/rewriting the app than finishing it  

But I'm curious - was I heading in the right direction? Is it worth finishing the content?