What are the best tools for Virtual Assistant?

To find the best tools to be a virtual assistant you need to identify your niche first. Are you mostly focusing on files and email management? If so I would advise you to learn the newest or at the very least the most common software and applications that are being used. A lot of tasks especially the basic ones are shared a lot on YouTube and other sites you can learn tips and tricks from there. I hope I helped a little. Good luck!