# A PSI4 Tutorial

- Psithon Tutorial: Using PSI4 as an Executable
  - Basic Input File Structure
  - Sample Input Files
  - Running a Basic Hartree–Fock Calculation
  - Geometry Optimization and Vibrational Frequency Analysis
  - Analysis of Intermolecular Interactions
  - Potential Surface Scans and Counterpoise Correction Made Easy with Psithon
- PsiAPI Tutorial: Using Psi4 as a Python Module
  - I. Basic Input Structure
  - II. Running a Basic Hartree-Fock Calculation
  - III. Geometry Optimization and Vibrational Frequency Analysis
  - IV. Analysis of Intermolecular Interactions
  - V. Potential Surface Scans and Counterpoise Correction Made Easy