For small data sets, I use a spreadsheet: raw text in the first column, then tags and categories in the other columns. I can then sort the answers according to a specific category or tag. For larger text analysis, there is a range of free quantitative analysis software depending on your specific needs: here is a link to get you started top free qualitative data analysis software

Sorry I didn't see your answer earlier. Yes, I've done all the courses in the specialization. I've just started the capstone project. I really liked it compared to other online courses because you have to apply the stuff you learn in a production of some sort every week (interview users, draw storyboards, create wireframes, do some testing, heuristics evaluation, even some R statistics analysis). It's not just multiple choices questions or rewording of the course content. So it's more demanding and time-consuming, but definitely worth it in my opinion.

I tried and I'm not sure I'll adopt it. Far more time consuming than scanning a RSS feed. Plus it looks like interactive, but the user input is in fact really limited.

Coursera has an Interaction Design Specialization, done by UC San Diego. You go through all the UX design steps, from needs finding to prototyping and testing. It's a hands-on course where you have to apply what you learn in peer-reviewed assignments every week.