EndNote 20 is the latest version of the Endnote desktop software. One of the biggest changes between this version and the previous one (X9) is that the interface is simplified. It has also combined Online Search and the Intergrated Mode into the main library.
You can find more information about the differences between the versions here:
You can also find additional resources for EndNote 20 here:
This is where you can find handouts and a video tutorial on how to use EndNote 20 for a Windows operating system.
This is where you can find handouts and a video tutorial on how to use EndNote 20 for a Mac operating system.
There are two previous versions of EndNote desktop that you might be using. Here are some user guides and additional information about those versions.