Several of my books are available both from here and Lulu.com in a variety of formats as shown below.
For larger books the coil bound version is without doubt the best for lying flat on the keyboard rest. The saddle stitch version is also ideal.
Note that the coil bound versions are not available from Amazon, Wordery, Walmart or W.H. Smiths etc.
These are only available here or from Lulu.com.
Every item is also available as an instant Digital Download in PDF format which can be read on any PC, laptop or tablet. But also note that in all cases if you buy the paperback version the digital download comes FREE.