If you want to buy a good all round Internet/PC security software package, look on Amazon and choose one from last year (2017 edition), yes it's still 2017, but it's classed as last years product, but it will more often than not allow you to do an update to the newest one which is the 2018 edition for free.
I did it last year with Kaspersky and when that expired I changed to Norton, I'll be looking at the prices on Amazon shortly, buying "last years" product installing it and then do the update from their servers to the latest edition.