Choose a signature song. In Japan, they call it your 'juhachiban', '#18' in South Korea and 'banquet song' in Hong Kong, but you can just call it 'the song you're going to be totally awesome at'. You might be tempted to pick an obscure song that you're really passionate about, but when you're starting out, try to pick a song that many people are familiar with and enjoy. The audience will have more fun listening and cheering you on, which will make things easier for you!^[1]

• Choose well-known songs that are in your range. Can you reach the high notes without screaming? Can you reach the low notes? Make sure the melody is easy to hum and that you can feel the rhythm easily. Learn the melody and study it as thoroughly as you would study any other subject. Record yourself and listen back. Taking time to write out all the words will help you memorize them quickly.
• Upbeat songs tend to be better crowd pleasers than slow songs. It should still be something that you enjoy singing along to, though, and make sure it's within your vocal range. 'Twist and Shout' by the Beatles is a safe choice; for female vocals, go for ABBA, Gloria Gaynor, or Madonna; guys should look into Sinatra, and Tom Jones.^[2] As you gain your confidence, you can choose more challenging or lesser known music.