Two birds, one stone
This lesson uses chess positions. Until you have played a little, its board questions are worked examples to read. New to chess? Play your first moves (five minutes), then learn it from the beginning.
A fork is the clearest case of one move doing two jobs. Off the board, looking for that move becomes a habit only if you practise it there too, as this week’s task asks.
You were part-way through this lesson, at step 1 of 7.