Join groups like Toastmasters or practice presenting in front of a mirror. Record yourself to identify and correct pronunciation or pacing issues.
Downloading the PDF is step one. Here is your 7-day action plan to turn that PDF into a pay raise:
Language is a tool. And like any tool, its value is determined by how you use it. A hammer in the drawer builds nothing. Business English in your head earns nothing.
Understand the nuances of business etiquette in different regions. This helps in building trust and avoiding misunderstandings.