IMac 10.5.8 - No application for opening downloaded books?

Question

I have a problem specifically opening and transferring books to my Kindle. No problem exists with Amazon e/book site, but most others seem to be a problem. Book items are 'downloaded' but when taking the next step to open/transfer to Kindle there is quote  "no available application to open it". Does any one have any idea as to how I may solve this issue?  My iMac is pretty old and I do not seem to get software updates as before - which may be part of the problem?
Thank you.
Lance

Answer 1

Your iMac isn't that old, but it is not running the latest versions of OS X.
I believe there is a KIndle Reader app for OS X, but you need OS X 10.6.8 Snow Leopard to be able to both access the Mac App Store to download the app and, also, to install and run the Kindle Book app.
You first need to purchase and install OS X 10.6 Snow Leopard.
http://store.apple.com/us/product/MC573Z/A/mac-os-x-106-snow-leopard
Also, it wouldn't hurt to increase the RAM in your iMac.
Your year and model iMac can take 8 GBs of RAM.
Intel versions of OS X tend to need a working minimum of 4 GBs of RAM.
If you can, strongly advise installing the full 8 GBs of RAM.
Correct and reliable Mac RAM can be purchased from online Mac RAM sources Crucial memory or OWC (macsales.com).
Once OS X 10.6 is installled , you will need to use OS X Software Update function in OS X's System Prefernces Panel to update to OS X to OS X 10.6.8. This will give your iMac access to the Mac App Store.
If you wish, your iMac year and model can be updated, once , again, for another $20 U.S.D., to OS X 10.8 Mountain Lion OR your can directly update for FREE to OS X 10.9 Mavericks.
Here's the link to OS X 10.8 Mountain Lion.
http://store.apple.com/us/product/D6377Z/A/os-x-mountain-lion
Before embarking on a OS X system upgrade, it would be very prudent to back up all of your important, personal data, beforehand.
You can choose just to backup the most important data by either burning data to CDs/DVDs, or copying data to large capacity USB flash drives.
The two better methods is to purchase a good quality external hard drive and backup the data and OS using OS X's Time Machine app to back your data up to an externally connected hard drive.
The other method is to backup your entire system and data using data cloning apps such as Carbon Copy Cloner or Super Duper to clone an exact copy of your iMac's internal hard drive to the externally connected hard drive.   Cloning data to an external drive will give that drive the ability to boot from in an emergency. Your Mac will be able to be booted and run off of an external drive.
The type of connection of an external hard drive is yours to choose. The two types of data transfer connections your Mac can use are USB 2.0 or FireWire 400/800.
If you want a hard drive that has a faster, continuous throughput of data and the possibilty of running your iMac from an external hard drive (in the event your Mac's internal hard drive fails or data becomes corrupt and your Mac system won't boot to the Mac's internal drive) opt for a FireWire drive. If none of this is important to you, then get a hard drive that uses a USB 2.0 connection, instead.
Good Luck!