Courses of some interest I brought up (6)
I believe the answer is:
orbits
'courses' is the definition.
(I've seen this before)
'some interest i brought up' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'up' says the letters should be written backwards (in down clue: letters go upwards).
'stibro' is hidden in the letters of 'interest i brought'.
'stibro' written backwards gives 'ORBITS'.
'of' is the link.
(Other definitions for orbits that I've seen before include "Goes around like paths of planets" , "Paths of satellites around planets" , "Travels in circular path like planet" , "Planetary paths" , "Curved paths of celestial objects" .)