This website contains tutorials on several topics in mathematics and numerical analysis as well as a number of other papers on various subjects. The tutorials cover harmonic analysis, numerical linear algebra, digital signal encoding, symmetry reductions and the modeling of Sonar transducers and arrays. There are also a number of papers on acoustics, particularly the acoustic radiation and scattering from arbitrary shaped bodies and the acoustic interaction of Sonar transducers in an array. In a slightly different vein you will find a collection of papers related to science and the Christian Faith. Several of these papers describe famous encounters involving science and Faith such as the Galileo affair, the Scopes Trial, and the Huxley-Wilberforce debate. Another paper looks at various views of the creation days in the first chapter of Genesis. The collection also contains brief biographies of Leonhard Euler and James Clerk Maxwell which include their scientific achievements as well as evidences of their Christian Faith. There is also a paper on the injustices involved in the arrest and trial of Jesus. Nowadays I do most of my reading on a Kindle and as a result I became interested in how eBooks are formatted. I have written a tutorial on how to format an eBook for Kindle and EPUB devices using HTML, CSS, and the Kindlegen program. I hope these papers will be of interest to you and will prove to be useful.