You will need to obtain a financial calculator, learn to use it and bring it to class. I recommend that you choose one of the two that are supported in
appendix D of the text. One is the HP-10BII and the other is the TI BA II Plus. ( I have a slight personal preference for the HP unit--but with very little rational agrument for it. I also like the feel
of the TI BA II Plus. ) Both are widely available, the office supply stores sell them for about $31.49 each. Aztec shops charges substantially more--so shop around.
There are more expensive, complicated calculators available, but I don't reommend them. (If you want to learn how to use a more complicated financial
calculator switch to a spreadsheet.) These are frequently harder to use and do not supply better results. A financial calculator should be looked at as a special purpose tool, don't get any more bells and whistles
than are absolutely necessary in a tool.
The most important thing is to learn to use it. Start with the manual. If you can't find yours here they are (they are PDF files):