Introduction: Cardiology nursing is one of the most challenging nursing specialties. Online continuing professional development (CPD) programs may allow nurses to fulfil the demand for specialty competency. Methods and materials: This manuscript described the process of data analysis and discusses the philosophical and theoretical frameworks that shape this study. the study was conducted in one of the largest accredited teaching hospitals in South Australia. Results: Volunteer participants were interviewed where each participant was given a pseudonym to protect confidentiality. First, interviews were transcribed manually. Transcription is considered an interpretive act and a perfect way to immerse oneself within the data because it helps create initial meanings. Second, the researcher listened to each interview while checking compatibility with the transcript. Third, the researcher read and re-read transcripts and highlighted essential ideas before the coding process. Repeated transcript reading helped develop main ideas, recognise shared thoughts, meanings, and patterns, and identify potential themes. Furthermore, it was evident during this stage that some of the researcher’s pre-assumptions regarding the phenomena were revealed in certain aspects of nurses’ lived experiences. In addition, audio recordings and a reflective diary were utilised to reveal non-verbal clues of participants, adding depth and transparency to data analysis. The final step involved writing a summary for each transcript containing the main ideas. Conclusions: It is apparent that six main themes were embedded in the lived experiences of the RNs working in cardiac services and using the online CPD course to advance themselves knowledge and skills.