While there isn't a direct way to skip GTA Online's tutorial, there are two loopholes you can try. The first method is to make two characters and select your second character to get the option of skipping the tutorial. The other method is to fail the first tutorial mission three times in a row to immediately go to online free mode. However, we do recommend that you go through the tutorial if you're a new player, to become familiar with the game's basic mechanics, world, and gameplay.