As with most "Christian" websites, some things you'll find on the following sites may not by useful or practical in your particular context, and some things you may not agree with theologically. However,  there are a lot of excellent, practical, Biblical items available. We encourage you to do what all believers are called to be doing: proceed with caution and use discernment.
Psalm 119:66 "Teach me good discernment and knowledge, for I believe in Your commandments."

Christian Youth Resources
www.wiktel.net/dgray
Rev. Dennis Gray has pulled together some website links for youth leaders to consider.

Every Student Every School
www.everyschool.com
“Every Student, Every School” is the slogan of the Campus Alliance.  This collaborative ministry is devoted to the mission of reaching out to every high school and middle school student with the Gospel of Jesus.

The Source for Youth Ministry
www.thesource4ym.com
Author and speaker Jonathan McKee gives youth leaders a menu of ideas from icebreakers to events to discussion guides.  The majority of the resources offered are free.

YouthWorker
www.youthworker.com
"YouthWorker exists to equip you to lead and raise up the next generation of the church. You'll find youth ministry mini-movies, worship tracks, worship backgrounds, church countdowns, and other media for events, small groups, and services each week. Plus, get tips and tools to develop leadership, discipleship, and encouragement for students in their walk with God from our wealth of article content and free resources."

Youth Specialties
youthspecialties.com
Youth Specialties has been helping Christian churches of every denomination lead students to find and follow Jesus for more than 40 years. Each year they serve more than 100,000 youth workers worldwide through training seminars, conventions, resources, and online communities.