Right Click and choose 'save target as' for each of these files.
Excel file for exercise 1: NUIG_IRL_RGDP_EX1.xls
Lecture notes for lectures 1 and 2:kinsella_growththeorymacronotesv0.1.pdf
And the lecture notes as a mathematica notebook, without output: growththeorymacronotes_outputless_v0.1-1.nb