LaTeX is a typesetting system commonly used for writing technical documents, such as papers in the fields of mathematics and computer science. To use LaTeX, you will need to install a LaTeX distribution, such as TeX Live or MiKTeX, on your computer. Once you have a LaTeX distribution installed, you can use a text editor, such as TeXworks or Sublime Text, to write and edit your document. Then you can use the command line or the built-in tools in the text editor to compile the LaTeX source code into a PDF or other format.

For more detailed instructions, you can refer to the documentation for your chosen LaTeX distribution and text editor. It is also a good idea to read some tutorials or learn from examples to get a better understanding of the basic syntax and features of LaTeX.

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You can watch following videos to start learning latex for research writing

https://youtu.be/jUPuyojXc58

https://youtu.be/REzCc0erDUM