Hibernate mode is very similar to sleep, but instead of saving your open documents and running applications to your RAM, it saves them to your hard disk. This allows your computer to turn off entirely, which means once your computer is in Hibernate mode, it uses zero power. Once the computer is powered back on, it will resume everything where you left off. It just takes a bit longer to resume than sleep mode does (though with an SSD, the difference isn’t as noticeable as it is with traditional hard drives). Best use: When you are flying and want 100% charge available, once in the air, or anytime you'll be shut down for an extended time, but want to quickly resume your session.

This is turned off by default in Windows 8 &10.  The thinking was, if you hit delete you probably want to save time and send this to the recycle bin.  There are several serious flaws with this:

• If you moved from Windows 7, you expect to still be asked in Windows 8/10.  "It took me months before I noticed files missing, that I knew I hadn't deleted.  Instead, I had probably hit the delete key without noticing.  Most users will NOT be automatically in the habit of "being careful", and WILL inadvertently lose files without noticing." - Alan Welsh
• You, someone walking by, or even your cat can accidently hit the delete key with something already highlighted, and it will be gone without you noticing.  Eventually, even if it went to the recycle bin, if you didn't notice it was gone, you'll likely never recover it before your recycle bin itself is cleaned out.
• The recycle bin often fails completely.  By default, Windows sets your recycle bin size to 5% of your available disk space.  As your data grows, your recycle bin's available space, shrinks. 
• As it shrinks after reaching 5%, it must delete files to make more room.
• If you delete something (like a large folder), that exceeds the size of your recycle bin, then it won't even try to move it to the recycle bin.
• If the available space in your recycle bin is smaller than what you are sending there, (even if less than the bin itself), these files will first automatically delete other files in your recycle bin, with no chance of retrieval.
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Like previous Windows 8 versions, Windows 10 doesn’t show file extensions, which according to most security experts is a VERY bad idea. Why?

Cybercriminals regularly send out spam mails with executable fixes hidden as documents like invoice.pdf.exe. Because Windows doesn’t show the file extension, the user only sees invoice.pdf and can therefore assume it’s a PDF file while in reality it’s a .exe file containing malware.

It's also very inconvenient to see files with seemingly identical filenames in a folder. You might have a document for example, "Pricelist". You have five files that look identical. After you make this change, you can clearly see that you have : Pricelist.DOC, .DOCX, .PDF, .XLS, .XLSX, and someone you know also hit reply, and sent you a file that was Pricelist.doc.EXE instead, since their PC was infected. It isn't bulletproof protection, but it sure beats hiding the extension for no good reason. (* Some file types, like .LNK link files will still hide their extensions.)

This is a neat little time saver. Instead of copying a file, locating and opening a folder, then locating and opening a sub folder and pasting the file in, just right click, pick "Copy to Folder". A dialog box will open up with File Explorer inside, so you can pick the folder you want to copy to.

"Move to Folder" is the same as Copy, except is moves it from the original location to the new destination (aka Cut instead of Copy).