These are the handouts and presentations from November's Privacy Tools meetup. TextSecure and Redphone for Android are very easy and quick to install. With TextSecure its as simple to send encrypted text messages as it is to send plain text messages.
Practical privacy tools for Android phones and tablets: Handout (PDF)
Practical privacy tools for iPhone phones and tablets: Handout (PDF)
Practical Privacy Tools: Slideshow (PDF)