Sparky 1 May I suggest that you also sit down and try to draw out the 2way circuits or any other you're not familiar with .
Look at the way a 2 way switch changes over for a start and the intermediates , which are different again , as Mr Swallocks has shown in post #2
And Welcome to the Forum.
Give us a heads up on how you 're doing with your apprenticship , what sort of work are you doing , big firm, small firm etc.
Are you learning all you can from the Sparks ?