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

- Build water dimers
- Build reactant complex and transition state structure for SN2 reaction
- Build iron(ethylenediamine)2 compounds
- Define phosphor-trihydroxide ligand
ADF:

- Interaction energies for repulsive and attractive water dimer
- Inversion of ammonia
- Success-story of DFT: CrO2F2
- SN2 reaction barrier
- SN2 reaction barrier: metagga and hybrids
- SN2 reaction barrier: solvent effects
- Proton affinity of ammonia


Also have a look at the standard examples