this is only from memory, but heres a quick step by step...
1. Lift up the small flaps on the roof using a flat blade screwdriver
2. screw the bolts (shorter thread side) into the holes beneath these flaps (long ones at the front, small at rear)
3. Then place the feet over the bolts with the deeper, contoured ones at the front with the overhangs facing into the car.
4. Place the rubber covers over these feet, again deeper ones at front (these are also cut to fit the contour of the roof).
5. The place the bars over these feet, with the bolt passing through the middle hole (the bars should be marked as to which is the front!).
6. Then place the thick spacer over the potruding bolt, with the concave side facing upwards.
7. Place the shaped spacer (this should fit into the curve of the thick spacer) over the bolt as well.
8. Then put the locking washer on top of this and then finally screw the nut onto the stack. (you don’t have to tighten this too much or the locking washer will crumble!)
9. After this is tightened up, clip the covers onto the bars and then tighten up the hex bolt which holds them on.
10. Job done!