Deckset Basics provides an overview of how to create presentations using Deckset. It discusses how Deckset uses Markdown syntax to transform text into presentations [1]. It describes how to create different types of slides, including paragraphs, headers, lists, emphasis, links, code samples, images, videos, quotes, footers and slide numbers [2]. It also explains how to add speaker notes, rehearse presentations, switch aspect ratios, and use basic HTML tags [3].