Where before you could simply drag any icon up to the Finder toolbar and hold it there for a second to add it, you now need to first hold down Option+Command and then start dragging the desired icon to the toolbar.
You can still remove the icons the same way as before: holding down Command, dragging the icon away from the toolbar and then releasing.
The DarwinPorts project that we all know and love has been reincarnated under the name MacPorts. It has been added to the Mac OS Forge project community. They are currently in the process of migrating everything over but you can expect to see it up and running again very soon.
Found this little tip on the Apple website. Very useful if you use a lot of applications on a somewhat regular basis.
dding folders to the right side of your dock can be a real timesaver, and two of the most popular folders to add to the dock are your home folder and your Applications folder. Another thing you might consider, rather than putting your entire Applications folder on your dock, is to create a new folder and put in aliases of just the applications and system add-ons (such as the Calculator, etc.) that you really use. Then you can access these by Control-clicking on the folder in the dock and a pop-up menu will appear that looks a lot like the Apple menu from OS 9.