You may want to take your individual questions to the appropriate category such as Business Development
or Social Media
. I say this not be offensive in any way because you have good questions. But you will open up the questions to more people and receive more responses given that this thread is about the most asked for services.
While I am quite sure my colleagues here will be pleased to answer your questions, if you want to get a broad perspective, try the categories I mentioned.
Another good thing to do is to poke around other virtual assistant websites who specialize in social media or email management, for example. You will see listings of services which explains what a particular VA will handle. When I was starting out, this type of research was a big help.