Recent advances in computational science have enabled students and university staff to create atomistic models for their study and research topics. As more and more people ask for help and support, we have decided that introducing online tutorials is the best way to share our knowledge and experience of atomistic simulations, not only with our students and colleagues, but also with others who might be interested. For most simulations, we use the VASP code (ab initio) or the LAMMPS package (molecular dynamics). Please note that these tutorials are not an official manual for either VASP or LAMMPS. They simply reflect the needs of our students and staff regarding their work. The tutorials provide comprehensive guidance, covering the entire process of atomistic simulations - from initial supercomputer login to data analysis. We are working on these lectures in cooperation with our colleagues from Norway within the project supported by EEA Funds 2014-2021. The main goals are:

• to introduce how to work in the Linux HPC (High Performance Computing) environment,
• to demonstrate how to create suitable atomistic models using available tools such as VESTA, OVITO, or CRYSTALMAKER,
• to provide guidelines on how to perform atomistic simulations - focusing mainly on VASP, as it is the most used code in our group, and also on LAMMPS.