Some of the user research techniques I use are:
Qualitative research methods such as in-depth interviews, usability testing, remote usability testing, stakeholder interviews, field studies.
Quantitative research methods such as online survey, analytics, open & closed card sorting.
Other UX research techniques I use:
– requirements & constraints gathering, affinity diagrams, competitor benchmarking, customer journey mapping, write user stories, persona, heuristic analysis and prototyping testing.