The document discusses 5 ways to improve public speaking skills like Barack Obama: 1) Consider the audience's interests and needs. 2) Keep messages simple and concise. 3) Consider multiple perspectives on issues. 4) Pause to breathe and speak deliberately. 5) Remain calm, assertive and relaxed. It then provides tips for non-native English speakers to improve their American English pronunciation with a focus on vowel sounds, consonant release, word stress, and intonation. Live training with native speakers is presented as the most effective approach.