In the first volume, we introduce the fundamentals of crafting professional presentations using the beamer class, covering basic structure, frames, lists, blocks, and the integration of figures and mathematical content. This chapter takes a step further by focusing on advanced techniques that enhance the clarity and visual appeal of scientific communication. We explore how to incorporate dynamic content such as animations and overlays to enrich presentations and improve audience engagement. Additionally, we provide comprehensive guidance on creating scientific posters using dedicated LaTeX classes such as beamerposter and baposter. These tools allow researchers to design visually effective, print-ready posters within the LaTeX environment, maintaining consistency in style and content. The chapter concludes with a comparative discussion of poster creation approaches and best practices to help you select the most suitable framework for your research presentations. Whether you are preparing for a conference talk or poster session, this chapter equips you with the tools and insights to deliver compelling, professional-quality materials.