Can't locate Arduino/Genuino Uno

Hello all. This is my first experience with microcontrollers so I bought myself a Grove Beginner Kit. I was planning on going through the wiki, but there is no option in Arduino IDE for Arduino/Genuino Uno despite the instructions…anyone else had this issue/can help me out? I tried the online and desktop versions. In the online version I find Arduino/Genuino 101 which doesn’t work and the desktop nada. Thanks!