OLED Display/Lotus

I have the Grove Beginner Kit for Arduino, and I can’t use the OLED display because I can’t download the appropriate library. I can’t see how you include it, since my version of the Arduino IDE has no “search” function and won’t allow me to include any libraries that I haven’t already downloaded. Do I have use some other IDE to do this? How can I download the text of the library so that I can use it? Why isn’t a direct download link in the documentation? This board is marketed for STEAM education, but I certainly wouldn’t recommend it to any teacher I knew without better documentation.