Resources for safety and best practices:

• CDC Heads Up Concussion training
• Heading Guidelines
• PCA Coaches Job Descripton

Online sessions:

• Massachusetts Youth Soccer sessions - U8 and above
• YESsoccer sessions - these are broken down by topic
• IYSA Coaches' Corner - All Sessions - training sessions from IYSA
• IYSA Coaches' Corner - All Activities - training activities from IYSA
• Kentucky Youth Soccer - lesson plans
• Washington Youth Soccer - age-appropriate lesson plans

Great video content to help you plan sessions:

• New York Red Bulls academy training videos - lots of advanced stuff, but also simpler topics
• JustFootballTV videos - great content from top German coaches
• Online Soccer Academy - Jared does a nice job with improve-at-home videos