My theme month is refreshing my R skills. However, I took a little detour in the past week by taking Jeff Li’s Cracking the Data Science Interview course.

This course covers:

• SQL (basic queries, joins, and window functions)
• Python (data structures, functions)
• Statistics and Machine Learning
• Product KPIs

I have completed the SQL portion (although it was very straightforward since I use it daily for work). I’m currently on the Python section and am taking copious notes. I’ll complete the other sections this week.

After this, I will find another R course in DataCamp to continue the refresher.