This program is a tutorial aimed mainly at medicine students, physicians and nurses, to improve the basic knowledge about electrocardiograms (ECGs). It presents 30 ECG traces, each related with a clinical case, and poses, for every ECG, some questions to be answered. Answers can be given orally, or written down on a sheet of paper, or whatever else but via PC, because the program has no option to record answers. Apart this little flaw, the questions are clever and sometimes they contain some trap, really useful to help students to bear in mind important concepts. Moreover, the interface is really pleasant and intuitive, joining beauty with effectiveness. In conclusion, a very useful tutorial program about ECG. Highly recommendable.