Online marketing is changing rapidly due to issues with Facebook's iOS and Google's cookie policy, and I've heard that I need to do CRM or email marketing, but I just felt lost. But after taking this lecture, I learned about numerous CRM tools and which tool is the best depending on the situation. Of course, this lecture is not suitable for the most advanced users, but if you are a marketer who has just started in marketing and has a dream and clear goals, this is a lecture that I highly recommend. Listen to it three times.