My taskbar (across the bottom of my desktop usually) has suddenly re-located itself to down the right hand side of my desk top.   A better view for it perhaps or maybe it didn’t like being at the bottom.   

Whatever it’s reason, I don’t like it where it is now but can’t work out how to send it back. 

Can you help, please?

This is easily, rectified, assuming you have done what I think you have.

Simply hover your mouse over a bit of the errant Taskbar, left click and hold down you finger. 

Now just drag it back to the bottom of your screen.

If that doesn't work, you may have "locked" it - in which case hover over it, right click, and un-tick the "lock the taskbar" option.

To avoid it happening again, once it's in the right place, lock it there by ticking the "lock the taskbar" option.