An online ad for the December gathering sported pictures of Tarek and Christina El Moussa, the stars of HGTV's "Flip or Flop" who buy rundown homes, renovate them and try to sell them for a profit. At free events in hotel ballrooms, instructors tell attendees that if they pay to enroll in three-day courses, they'll learn how the couple flips homes and also gain access to investors who will give them cash to buy properties, even if they have low credit scores or a weak job history. The homework on the first day was for attendees to call their credit card companies and increase their credit limits, he said. Zurixx has partnered with other reality TV stars to create education programs under different names, some of which also have been the subject of complaints from students. The U.S.