Welcome to UE
You might find it helpful to know more about the exam format on Cambridge English: First (FCE)
There was a very nice Teacher support website https://www.teachers.cambridgeesol.org/ts/but right now it' 'temporally unavailable'. I hope it will work for you. There you can find lots of lesson plans and activities on various papers. In any case, explore the Cambridge site - they have a lot to offer for the exam preparation.
Also, for the speaking paper "Splendid speaking" FCE Speaking: Practice tests and tips for students preparing for the First Certificate Speaking test. is probably the best - they have weekly speaking task sheets and audio samples.
ps Cambridge ESOL Teacher Support - all activities are centred around the exam tasks.