3. Tutorial: learning WannierTools through examples# 3.1. Bi2Se3 (3D strong TI) 3.1.1. First principle calculation 3.1.2. Band structure 3.1.3. Z2 topological number 3.1.4. Surface state 3.1.5. Spin texture 3.1.6. Full settings in WT.in of Bi2Se3 3.2. MoS2 (2D QSHE) 3.2.1. Band structure 3.2.2. Z2 topological number 3.2.3. Edge state 3.2.4. Full settings in WT.in of 1Tp-MoS2 3.3. WTe2 (Type II Weyl semimetal) 3.4. IrF4 (Nodal Chain metals) 3.5. FeSi (Weyl point in Phonon system)