Good on you for wanting to try something new with your books. I host a podcast on writing (feel free to send me a link to your blog/author page, or if permission allows me to post a link to my writing website.) and have done the odd audio book. All I can say is that recording an audiobook is completely different than just reading it! Sounds weird I know but there's a bit involved with timing, not obeying grammar rules (eg sometimes skipping a comma makes someone speaking flow better).
When it comes to setup, like the others have mentioned, work on your budget. So do a demo recording first with whatever you have. You are happy with results but need that more professional sound, then sit down and work out your limit.
For me whose podcast is a hobby, I don't spend too much. Here's what I did:
Behringer C-1:
http://www.amazon.com/Behringer-C-1-Stu ... B000CZ0RLK (I got mine off ebay for $50 inc shipping).
Alto 12 Channel mixing desk. Now having been a service tech for music gear, Alto and Behringer are NOT classed as good brands. However, they are cheap and occasionally they have a gem (I have an alto compressor that has just "worked" for 10 years. Hey as long as it does the job right?). Bought this off ebay for $80. For Audio books and podcasting I would suggest:
http://www.behringer.com/EN/Products/802.aspx Again probably only set you back $100.
Misc cabling. I run my own AV business so had cables coming out of the whats its. You'll need an XLR cable (male to female). A short one. No more than 1m should be fine. Don't worry about high quality, this is going from desk to mic, not being thrown around by Roger Daltry.
3.5mm to RCA cable for output into PC.
I modified a desk lamp boom arm to have the microphone clip rather than the lamp. I eventually added two stronger springs from the hardware store. Works amazing. Lamp style:
http://www.vdeen.com/UploadFiles/2010122111264157.jpg
Also, I grabbed a coat hanger, bent a section into a circle and placed the end of a heavy sock over it. Mounted this about 2 inches from the mic to act as a pop filter.
I record out in my garage turned office/workshop. It's quiet enough and with tweaking of settings I can get close to the mic and not have the sound of a car driving past affect the recording. If you can't find a quiet location, I would suggest recording in your wardrobe/closet. Some people do this and turn it into a professional sound booth. See this guy:
https://www.youtube.com/feed/UCsAAnA87sazxWRMSiiCMr4g
Its all old school but has some good results!
Okay now shoot me to pieces LOL.
Damien