it is important to make sense of synoptic charts and the following worksheet covers the basics excellently:engg10k1-ss-geo-unit-4-reading-and-interpreting-synoptic-weather-maps
It is also a good idea to view the following videos for a clear explanation of how to interpret the weather charts:
Remember that any question about synoptic charts will not just require you to identify and explain symbols or features, but also to draw conclusions from the items on the chart such as: what time of the year it is ad why, what sort of typical weatrher will occur at a give point or why a particular type of weather ca be expected at a particular point. If isobars are close together in front of a cold front what should farmers do in the area?
A good way to approach synoptic charts is to look for the following and ask yourself the following questions:
Where is the pressure higher or lower than average? Are isobars close together or far apart? Are there any air masses / fronts? Are skies cloudy or clear?
The ask yourself; What will the weather be like there on the ground? Why? What changes are happening and in what direction? Why?