studio 3-23 darren li iteration 2 1 moving foward addign materials continuing no thing1 changing landscape21 error file fixing addingn site adding site part adding PLAN2 ADDING MROE PLAN AND DOING CLICKHOVER for real | hower_teaching | Observablestudio 3-23 darren li iteration 2 1 moving foward addign materials continuing no thing1 changing landscape21 error file fixing addingn site adding site part adding PLAN2 ADDING MROE PLAN AND DOING CLICKHOVER for real | hower_teaching | Observable