Thanks for your answers. I have read the recommeded documents about CAQDAS. However, I explain you my methodology and theme research: I am doing a qualitative case study on a tactical approach to games teaching PE subject. My intention is to use an inductive analysis perspective (not a Grounded Theory one) to examine thematic similarities and differences from data provided by different study participants (mainly from transcribed audiotape interviews, observation and diary notes, and videotaped classes). Emerged core themes will be interpreted through Teaching for Understanding, Situating Learning and Communities of Practice theories. My question is, which software is of most useful for my study? Atlas-ti?. Thanks in advance. Roberto.