Test documentation (check-lists and test-cases)
Test-design techniques (equivalence partitioning, boundary value analysis, use-cases testing)
Test-analysis (mind-maps usage, state and transition based testing)
Functional testing
Non-functional testing (usability and usability guidelines usage)
Exploratory testing: cheat sheets and test tours, ad-hoc, session based testing
Requirements testing
Bug report writing
Development methodologies
Testing process and KPI