The chart shows the Milky Way's position at about 8pm (yes indeed, it is the diagonal wobbly thing going from the top-left to the bottom right of the chart). The centre of the chart represents the point directly above your head, known as the zenith. The circle represents the horizon: notice the points of the compass around the outside. If you're wondering why E and W seem to be flipped, it is because this is a chart for the sky and therefore your view looking upwards and not downwards as you would look at an ordinary road map. In other words, if you hold it (or the computer screen!) above your head and orientate "W" to where the sunset then all will be well with the heavens.
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General background stuff for your additional viewing pleasure
This is a great time to look for the Milky Way. This faint band of meandering light stretches up from the north-east horizon over and down into the south-west, but the best part for most of us will be overhead due to the light-pollution.
The Milky Way is made of millions upon millions of stars that are just too far away to be seen individually, but their light together merges to form this misty river of light.
It's best seen from countryside locations away from house security lights, buildings in general, cows and tress. If you have never seen the Milky Way before and want to have a go, and especially if you live near a town or city, do give yourself a good five minutes outside to get your eyes used to the dark and you'll have a much better chance of seeing it.
