Yes. They will help you or you could watch a YouTube video. After installing malware bytes on hundreds of clients computers I would say you made a great choice. It should be a plug and play. All.you have to do is check the accept button and install.
It should auto install with a few clicks but I'm sure they would help you out. FYI if you're running windows 10 you don't need it. Just keep it updated. The built in anti-virus works well. Those programs weight your computer down, always report home and the communication slows your computer.
Yes
BB will assist you in installing most software you purchase from BB (or get free with a purchase of another item,) many times they will walk you through installing it so that you learn what options to use when installing future software. Short answer, yes.
Most likely
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