To celebrate of the 18th anniversary of TidBITS, we're offering a 50% discount on all Take Control and Macworld Superguide ebooks through next Tuesday, April 29th. To take advantage of the sale, use this link to start shopping in our catalog; the necessary coupon code will be applied automatically in the first screen of the shopping cart. Note that you can select multiple books from the different tabs in the catalog's tabbed interface before clicking the Buy Selected Ebooks button to add them to your cart. (Print books are not included in the sale.)

New and recently updated titles you might especially want to check out include:

• Joe Kissell's "Take Control of Maintaining Your Mac"
• Steve Sande's "Take Control of iWeb: iLife '08 Edition"
• Ted Landau's "Take Control of Your iPhone"
• Brian Tanaka's "Take Control of Permissions in Leopard"
• Joe Kissell's "Take Control of Easy Backups in Leopard"
• Matt Neuburg's "Take Control of Customizing Leopard"

Also be sure to check out the latest ebooks from Macworld:

• "Macworld Mac OS X Hints Superguide, Leopard Edition"
• "Macworld Total Leopard Superguide"

Although print versions of our books are not included in the sale, print copies ordered from within an existing ebook are still discounted at the cover price, not the price you pay during the sale. So, if you buy a copy of "Take Control of Switching to the Mac" for $5 during the sale, clicking the Print link at the top of the first page will still save you $10 off the normal print price. (For older ebooks that predate the Print link, just click the Check for Updates button and then click the Order Print Copy tab in the Web page that appears.)