Download and save the file prez.tex, which contains the source text of a presentation example in LaTeX. Compile the file to PDF format and compare it with the file prez.pdf (you may need to run the compilation twice for the presentation content and slide numbering to be generated correctly).
Modify the example towards an initial version of your article presentation:
enter the title, author name, and date
enter several sections (even though you probably won't use them in your presentation due to its brevity)
create several slides with first and second level bullet points
create a slide with an image (including an image file)
Compile the file to PDF format. Try changing the appearance (theme) and colors of the presentation with the \usetheme and \usecolortheme commands (in the preamble of the prez.tex file there are several themes and color schemes marked with comments).