Are you fishing for Panfish, Walleyes? For panfish I would get some tungsten jigs and plastics for bait. Also some Waxies or Spikes are good if you want to have some live bait to help flavor things up.
I use a lot of different types of jigs, but most are a horizontal type, like the Custom Jigs and spins Ratso, or a Flirty Girty. Colors can also play a huge part in what fish want on a particular day. I like Black, Purple, Pink, but others are good to have as well.
Here are my top go to baits.
Little Cecil in Silver
Ratso Black, Purple
Flirty Girty Purple, Black, Red
Slender Spoon Gold & Green
Gill Pill
A wide assortment here
http://www.customjigsandspins.com/
http://www.b-ybaits.com/
As others have said a low end flasher like the Marcum VX-1 will be the best purchase you can make, after that a power auger and a flip over shack.
Good luck and make sure you ask questions, that’s why we are all here, to spread our love of the sport.