This video explains how to walk from A to B following a bearing.
NOTE: This video is from the UK, so when he makes an adjustment for magnetic declination he adds 2°. Here in Victoria you should subtract between 9 and 12° depending on your location.
This video explains the main features of a topgraphical map.
This video explains all about magnetic north, true north and grid north. It explains the differences and the relationships between the three types of north and importantly explains the difference between magnetic declination and the grid mag angle. It is from Australia so the figure used are very relavent.