Useful links

Density Functional Theory (DFT):

DFT codes

Crystal Structure Databases:

American Mineralogist Crystal Structure Database

Crystallographic Database for Minerals and Their Structural Analogues

Crystallography Open Database

ICSD Web: the Inorganic Crystal Structure Database

Wyckoff positions:

Wyckoff Positions - Bilbao Crystallographic Server

Crystal softwares:

CIF2Cell: CIF2Cell is a tool to generate the geometrical setup for various electronic structure codes from a CIF (Crystallographic Information Framework) file.

Linux:

Introduction to Linux - The Linux Documentation Project

Introduction To Linux - Linux.org

News and feature lists of Linux and BSD distributions

Useful softwares:

G3DATA for extracting data from graphs.

Visualization Toolkit (VTK)

Python:

A Crash Course in Python for Scientists

Install XePersian on Linux-mint using command-line:
sudo apt install texlive-latex-base texlive  texlive-xetex texlive-lang-arabic texlive-latex-recommended

Install revtex on Linux-mint using command-line:
sudo apt-get install texlive-publishers