How to Hide Search, Cortana, and Task View Buttons from Taskbar in Windows 10
Windows 10 comes with an updated taskbar experience that includes a search box, a Cortana icon, and a Task View button enabled on the taskbar. They look like any other regular pinned app, but have no context menu. It is possible to hide or show them. By hiding these controls, you will extra space for running app buttons.
How To Switch App Windows Directly in Windows 10 Taskbar Without Clicking on Thumbnails
In Windows 10, the taskbar button grouping feature is turned on by default. In this mode, clicking on a group button makes it show a list of window thumbnails. You can make the taskbar switch to the last active program window in the group with a single click.
In Windows 10, Microsoft reduced the size of application icons on the taskbar to 24 x 24. Many users want the have larger icons with size of 32 x 32, similarly to what they were in Windows 7 and 8. Here is a bit of good news - it is can be done with a small freeware tool.
It is possible to pin any folder to the taskbar in Windows 10 . This will allow you to open the pinned folders with one click. This post explains in detail how it can be done.
Windows 10 replaces the classic balloon notifications with a new notification toasts. If you like balloon notifications and are not happy with toasts, you can restore balloon notifications back in Windows 10.