Goal is to hit 20 million by the end of June!

After squandering away my life savings on NC and my neo life savings on shinies and pretties, it's time for me to save some. I'm going on a no spend month irl, and to sell some of my things for extra cash. Unfortunately, it's not so simple on neo. I dabble in restocking and reselling, but I'm a noob in pretty much anything else. What's the best page for food club? What's the best shop to restock in? What are your favorite things to do that will get me to 20 million by the end of June?