Well, it depends on how you use it and no, not properly
No, you cannot start a sentence with "no" unless you need to do so. No reason exists not to start a sentence with that word, as you can see. No one will care if you do start a sentence with it.
Yes, I can start a sentence with "Is."
Yes, you can start a sentence with a verb.
Yes, you can start a sentence with an acronym.
You can start a sentence with "Also"
You start a sentence with whatever word you need to start it with. A sentence can start with "A" if it needs to. A sentence just needs to make sense.
Yes you can! "For ten long years, I pondered how to start a sentence with 'for'."
can you start a sentence using the word phishing?
Yes, a quote form Shakespeare will tell you that you can start a sentence with to. :To be, or not to be?
Yes, you can start a sentence with the keyword "apple."
Yes, you can start a sentence with the abbreviation "FYI."
Yes, you can start a sentence with the acronym "NASA."