This book aims to bring together researchers, academics, and professionals, promoting the sharing and discussing knowledge, new perspectives, experiences, and innovations in Qualitative Research. This book includes selecting the articles accepted for presentation and discussion at WCQR2024, held January 23 to 25, 2024 (face-to-face and virtual conference). WCQR2024 featured four main application fields (Education, Health, Social Sciences, and Engineering/Technology) and seven main subjects: Rationale and Paradigms of Qualitative Research; Systematization of Approaches with Qualitative Studies; Qualitative and Mixed Methods Research; Data Analysis Types; Innovative Processes of Qualitative Data Analysis; Qualitative Research in Web Context; Qualitative Analysis with Software Support. The book is valuable for everyone interested in qualitative research, emphasizing Computer-Assisted Qualitative Data Analysis Software (CAQDAS).