Here are some websites and articles with some background on meditation and basic techniques. As you'll gather from the titles there are a few different perspectives and approaches, so hopefully something for everyone.
A Meditation With Nature - Mary Kurus (Written narrative)
Back To Basics Guided Meditation: For beginners & returning meditation users (YouTube - 15:00)
A Guided Meditation to Rebalance Your Root Chakra (YouTube - 4:18)