A lot of people offer "rewards" for hitting certain pre-order marks. ex) New chapter for every 20 orders, GC raffles for hitting 100 orders, etc. Whether or not these tactics help, is hard to say. I imagine a lot of it depends on how well they broadcast it. Sometimes it’s a matter of having something to say that draws attention more than anything else.
As far as tips go, checking out the goodreads forum is a great start, and I’ll add:
Check out the Inkshare’s Crowdfunding Guide: http://blog.inkshares.com/post/112695045510/the-inkshares-6-step-guide-to-crowdfunding-your
Study a few of the successful projects. See if you can follow them on twitter or facebook and dig up old posts to see how they marketed themselves. A lot of people info-dumped on goodreads shortly after the Nerdist competition, so find the posts from that time and see what other tactics they shared.
Whether or not these tactics help, is hard to say. I imagine a lot of it depends on how well they broadcast it. Sometimes it’s a matter of having something to say that draws attention more than anything else.
As far as tips go, checking out the goodreads forum is a great start, and I’ll add: