I held off for as long as I could and even tried Linux for a while before giving in and going W10, but things bugged me ... and still do. So, good people, here are a few tweaks to make life a little easier.
Getting to File Manager / Windows Explorer / This PC / My Computer or whatever it is called this week. If you open it by whatever convoluted way Microsoft has decided you will see a file folder icon on your taskbar. Right click and order it to be pinned there. Close the explorer window and the folder remains on the taskbar. Click it and Windows Explorer opens again. Simples!
Shutting down. It was always bad and mad clicking the "Start" button and going through menus just to shut the computer down. Here is the quick way. Go to c:\Windows\System 32.... use the icon you just created for Windows Explorer. Right click in a blank space and choose Sort by Type. Scroll across and find shutdown.exe. Right click on it and then 'create shortcut'. Windows will say that it cannot create a shortcut here and will ask to put it on the desktop - tell it Yes. Go to the desktop and find your shortcut. Right click and go to Properties then where it says Target put a space after shutdown.exe and add /s /t 0. Choose to Run Minimized. Cick the Change Icon button and there you will find a proper shutdown button. Click OK - Apply - OK. Now drag the shortcut to the taskbar next to the old "Start" button and pin it, you now have a one-click shutdown.
I have stubby fingers so opening the CD/DVD tray is a chore... press, press, press, press, oh look it has decided to open! Here is the cure. Go to https://www.nirsoft.net/utils/nircmd.html then hit the End button on your keyboard and download NirCmd. Only get the 64-bit version if you are sure your computer is 64-bit. Unzip the NirCmd folder and copy nircmd.exe to the C:\Windows/System 32 folder. Do the shortcut stuff as you did for Shutdown but this time put a space after nircmd.exe and add cdrom open. Choose an icon then drag and pin to the taskbar. A simple click opens the tray.
Now, the Control Panel. I often go there but all the instructions, even Microsoft's own, are garbage. I also find navigating the Settings app a pain, so I did this. Right click a blank space on the desktop and choose Personalize. In the panel click on Themes then go to the bottom of the right panel and look for and click on Desktop icon settings. In there make sure that the Control Panel box is ticked then apply and OK out. You will now find a Control Panel applet in your desktop icons. Right click to create a shortcut and change its icon as you have already done with the others then drag and pin it to the taskbar. A single click brings up the old control panel icons page so you can easily get to Device Manager, Time & Date, Sounds etc.