Digital downloads will all be fulfilled via DriveThruRPG; you'll get a download credit for a watermarked PDF.
For print books, it's a little more complicated; how many print books are ordered will determine how we go about printing. If it's a big number, we'll do a press print run. If it's smaller, we'll do everything as print-on-demand books via DriveThruRPG. Regardless of whether we do a full print run or not, you'll have the option of getting the book as a print-on-demand via DriveThruRPG.
Just like with printing books, how exactly orders get shipped will depend on how many physical orders we have to be sent. Your pledges do not include shipping costs in them; they'll be charged when the project fulfills. We'll evaluate our shipping options when we're ready to fulfill, and find the best possible method that's a low cost to you, based on your location..
Don't see the answer to your question? Ask the project creator directly.