Exercises for ADF and ADF-GUI (difficulty: hard)
ADF-GUI:

- Build the iron(methylenediamine)3 compound
- Symmetrize the iron(methylenediamine)3 compound
- Build a C20 fullerene compound
ADF:

- Solvent effect on the proton affinity of ammonia
- Interaction energy of molecules in a C20 fullerene compound
- Difficult SCF
- TS search with symmetry constraints
- Association energy of ruthenocene


Also have a look at the standard examples