Hi Poppies, this is probably one of the most simple meditation tecniques other than chanting mantras;

1. Sit quiently in the meditation posture (back strait, head inclined slightly
forward, eyes loosely shut or partly open, hands resting in lap, right hand
facing up in the palm of left hand with tips of thumbs lightly touching, tip of
tongue lightly touching the roof of mouth on the tip of the palate).
2. Become aware of being in the present, here and now,and relax into this
space.
3. Resolve to let go of your thoughts, fantasies, about the future, nostalgia
about the past, mulling over problems etc.
4. Maintain a balance between trying too hard and becoming too sleepy and
dull.
5. Bring your attention to your breathing and notice the sensation at the tip
of your nostrils for each breath in and out.
6. Be careful to just watch the breath and not to try and make it deeper or
different in any way.
7. Each time you find your mind has wondered from the breath and followed
some thought, gently bring your attention back to your breathing.

It is recommended that you practice this for about twenty minutes a day to start with, anything more can cause despondency if "results" aren't acheived quickly enough.
In Buddhist terms the first sign of progress is called the waterfall effect.Be aware that your mind will wander a great deal to start with, you will begin to notice how much activity there is going on in your mind, usually we are not aware of how busy our mind is and noticing this restlessness is actually the first sign that it is beginning to calm down. It is often helpful to count your breaths to start with; from one to ten starting again each time you become distracted.
When I started practising meditation I found it very helpful to listen to specialist CDs which contain brain wave audio technology. these are CDs which send very specific sound frequencies into your brain via headphones which produce a phantom signal called a binaural beat. Your brain activity slips into rhythm with this beat and goes into a state called hemispheric synchronization - meditative states which can otherwise take a while to develope.