Single-crystal diffraction
Single-crystal diffraction includes or may include: unit cell determination, structure determination, absolute configuration analysis, crystal face indexing

Powder diffraction
Powder diffraction includes or may include: structure determination, phase and impurity identification, screening of thermal behavior (e.g. phase transitions, hydration/dehydration), non-ambient diffraction (e.g. hot-humidity), controlled atmosphere measurements, thin-film diffraction

This may include: crystallization tips and tricks, PXRD data interpretation, advise on the use of databases