Vigorous pursuit of the investigation of magnetic activity in stars with convective envelopes requires a diversity of observational studies and a variety of instrumentation. I leave out purely solar studies of magnetic structure and activity; it goes without saying that any well designed solar investigation contributes to better understanding of general astrophysical problems. Hence I restrict myself to observational programs pointed at stars (sections 1, 2, 3) and to solar studies necessary to interpret stellar data (section 4).