I think most importantly, before you buy any lures, what gear do you have now ? Depending on the rod / reel set up, that will actually dictate which lures you can use most productively.
It takes a higher end reel to throw cowgirls well, and also the big plastics. Make sure you have the right rod and reel set up before you buy lures.
Next, where are you going to fish is important. What types of lures are productive on the body of water you are going to fish the most.
Here are some nice basics to think about when starting out
Bucktails
Pan Ghosttail ( basic hair bucktail, very well built )
Double 8’s
Spinnerbait ( llungen / slither viper / CJ’s )
Crankbaits
Rapala Super Shad ( casting or trolling )
Big Game for shallow casting / twitching
Topwater
Headbanger
Lee’s Water Chopper
Jerkbaits
Bobbie
Depending on the gear and what type of shape your in, —
Cowgirls
Big Plastics
Not a bad idea to head to the MN Muskie Show coming up March 9th – 12th, pretty much everything in one place to compare
Good luck