(Another question frequently asked)
You should start marketing your book the day you’re sure you’re going to write it. Your website is a major part of your marketing.
Consider how movies are marketed. A year in advance, sometimes more, teasers start to come out. A website goes up with trivia, bits and pieces.
As the date approaches, the teasers turn into trailers, longer more detailed snippets to suck you in and build excitement, buzz.
Just before the launch is when the big blitz happens, but it only matters because real fans have been talking about it since the announcement a year ago.
… more … “When should I start my author website? What should I put on it?”