Good Morning Todd,
The Singer 29 series is what is referred to as a patch machine. It has the long arm and a rotating presserfoot mechanism so that you can get down inside a boot and still rotate your stitch. No need to "buy" a manual when you can go on the Singer web-site and download one for free.
As far as the belting material is concerned...it uses a standard round leather belt...this material can be purchased from a variety of sources. Artisan, Ferdco, Adler, and I believe Singer still make this style machine so any one of these suppliers would be able to get you the belt material.