There is the self guided part where they tell you to follow signs to X. Then they'll tell you the self guided part is over and then they will give you 'turn left' and 'turn right' etc. In my case the self guided part was mostly nonsense because he had to keep giving me new directions anyway. Ie. 'Follow signs to Slough', so I turned left at the roundabout because that's where the sign pointed to Slough. Then I drove along a straight road with no turns for a bit then he gave me a new instruction to follow signs to somewhere else. Nothing to worry about, if you go the wrong way they won't fail you so long as you do it safely. On my mod 2 the instructor told me to take 2nd left, I missed the turn and the instructor turned left anyway. He then told me to turn around where it was was safe and come back to join him.