What are some good settings for a line 6 sipder 4 15w?

i dont know what to put the settings at im lost. i wanted to get some santana black magic woman sounds, rush, metallia, van halen, dethklok, what are some good settings to put my amp in, its only a line 6 spider 4 15 w amp. so i only have so much to play around with, please help, experienced guitarists who own the same amp would be helpful. thanks. :)