This is a study about a teaching tool for nurses. The researchers want to see if a self-learning program (SIM) can improve nurses' knowledge and skills in caring for patients with heart attack (MI) and angina. They'll compare nurses who use the program to nurses who don't. A study investigated how well nurses manage patients with heart attack (MI) and angina. Nurses' knowledge and skills varied. The researchers created a self-learning program (SIM) to improve these areas. They compared nurses who used the SIM to nurses who didn't. The nurses who used the SIM learned more and improved their skills in managing these heart conditions. This suggests that a self-learning program can be a helpful tool for nurses to improve patient care. Background: Nurses play a crucial role in managing patients with Myocardial Infarction (MI) and Angina. However, their knowledge and practice skills in this area may vary. This study aimed to: • Assess the knowledge and practice levels of staff nurses regarding MI & Angina management. • Evaluate the effectiveness of a self-instructional module (SIM) in improving these aspects. Methods: We recruited 200 staff nurses from a hospital in Mohali, Punjab, and divided them into two groups: experimental and control. Both groups completed questionnaires to assess their baseline knowledge and practice related to MI & Angina management. The experimental group then received the SIM intervention, while the control group did not. After the intervention, both groups were reassessed using the same questionnaires. Conclusions: This study suggests that a self-instructional module can be an effective tool for improving staff nurses' knowledge and practice skills in managing patients with MI & Angina. This can potentially lead to better patient care and outcomes.