LaTeX is a document preparation system for high-quality typesetting. It is most often used for medium-to-large technical or scientific documents but it can be used for almost any form of publishing.(https://www.latex-project.org/) LaTeX is not a word processor! Instead, LaTeX encourages authors not to worry too much about the appearance of their documents but to concentrate on getting the right content.
The Latex templates for IEEE journal and conference can be downloaded from here.
A. Baran put on a very good video tutorial for Latex beginners from here.