The cseligman toolbar (shown above) is meant to enable easy navigation and access to my site, by providing links to every page on the site. It also includes an RSS Feed for updates on significant changes to the site (or my classes), and hundreds of external links, including every page on my publisher's site. Most individuals who install the toolbar find it very helpful; but if you do not, it is easy to uninstall.

Downloading and Installing the Toolbar on Various Platforms
    To download and install the Toolbar for Internet Explorer, click on the image above, then click Run when prompted by the File Download Security Warning. The file will self-install, and the Toolbar will appear, more or less as shown. The Internet Explorer version of the Toolbar only runs on Windows platforms, but the Firefox version runs on Windows, Mac and Linux platforms, and the Safari version runs on Macs. Google Chrome is not currently supported.
    There appear to be some Internet Explorer/Windows browser/operating system issues. For example, when running IE8 with pre-Vista operating systems (e.g., Windows XP), clicking a toolbar item to open a web page may result in an Internet Explorer error message, or an incomplete page load. Using the browser refresh button should take care of this problem. (I haven't tested IE9 with the toolbar. IE9 appears to be the buggiest version of Internet Explorer ever released, so I have uninstalled it on every computer I own.)

Firefox Popup Problem
     The Firefox popup window blocker seems to have difficulty preventing popups on some sites when the toolbar is active. Fortunately, most popups that circumvent the blocker open behind the original browser window and at the top of the desktop, so they can be closed by setting the browser window so it does not quite extend to the top of the desktop, and when a popup window opens up above and behind the open window, clicking the close-window-X on the popup. (This should be done as soon as the popup opens, as it may start running subsidiary programs, and some of those could be malicious.)

Fixed Toolbar Items
     Running from left to right, a newly installed Toolbar has the following items/buttons:
     An image of the Erindale Liger, Kat's Bane, the Erindale Publishing "mascot". Holding the cursor over the image shows that the toolbar is sponsored by my publisher, Erindale Publishing. Clicking on the image takes you to their site.
     A drop-down Toolbar menu can be used to customize the Toolbar. Most of the items on the drop-down menu are self-explanatory, and can be learned by playing with it. For instance, Shrink Toolbar removes the text labels on Toolbar items, and if that has been done, Unshrink Toolbar restores the labels. Toolbar Options lets you to delete or add items to the Toolbar, and in some cases, modify the behavior or display of the items. (With some operating systems and browsers, these customization options can also be accessed by right-clicking on the toolbar.)
     The Search Box is similar to any other online search box -- but check out the drop-down menu next to the box for more than a dozen different ways to search, including Search This Site, and an Apps Search which allows you to choose from thousands of toolbar add-ons. A newly installed toolbar includes an eBay app as an example of such an add-on; but as noted below, that can be removed by the user.

'Customizable' Toolbar Items (shown above, turned on/off with Toolbar Options):
     An Erindale Publishing Menu includes links to every page on my publisher's website (since, as noted above, they are the sponsors for the toolbar).
     A Book Download Menu provides downloads of short stories and excerpts from my novels, many of which will not be available anywhere else.
     A cseligman Menu includes links to every page on my website, and to a web-page version of the site's RSS Feed.
     A cseligman RSS Reader provides RSS feeds for cseligman.com and various science-related news feeds.
     A Links Menu (indicated by a heart) includes hundreds of hand-selected external links, including all the links on my (now extinct) External Links page.
     An Online Radio Player is a fully customizable streaming radio player, preloaded with dozens of stations.
     "App" Example: As stated above, newly installed toolbars contain an eBay app as an example of the thousands of apps which may be added or removed by the individual user (like many useful Apps, this button should not be activated on a shared computer unless you remember to log-off when you leave the computer).
     A Weather Button shows the current weather in some random city when first installed. If you click the button, it shows the weather for the next three days, and allows you to customize the button (for instance, by choosing a different city).

Other Customizable Items (not shown above, also turned on/off with Toolbar Options):
     An E-Mail Notifier alerts you to any new email (once properly set up for your accounts).
     A Pop-Up Blocker and Privacy Button, which includes history, cookie and cache cleaners.
     A Facebook button, which allows toolbar access to your Facebook account while browsing elsewhere (like many useful Apps, this button should not be activated on a shared computer unless you remember to log-off when you leave the computer).