Not all great tutorials are PDFs, but some PDFs are designed to complement visual learning. For instance, the "Illustrator CS6: Visual QuickStart Guide" includes an hour-long HD video and an ebook, giving you the best of both worlds: the searchable, reference-friendly PDF and the dynamic instruction of a video tutorial.
To obtain the tutorial you are looking for, use the following refined search queries to bypass the "90" typo:
Adobe Illustrator CS6 is vector-based software. Unlike Photoshop (raster), Illustrator creates images based on mathematical paths, meaning you can resize graphics infinitely without losing quality.
