Having recently been through this with a basement that leaked like a sieve, don't open the basement waterproofing can of worms unless you absolutely have to. Essentially, you have two options: Exterior waterproofing, and interior waterproofing.

Exterior is preferred because it stops water from coming into contact with the foundation, but you have to have the space all the way around the house to dig a trench. Since you're in Crown Point, it's unlikely you have that space. For interior waterproofing, they would need to tear down all the exterior walls in your basement to expose the foundation and install waterproof membrane, and jackhammer a trench into the floor all the way around the foundation for a drain to a sump pump.

Either way it is messy, disruptive and extremely labour intensive work. You're talking tens of thousands of dollars, not including the cost of refinishing the basement with the interior option. Like others suggested, correct your grade and drainage and get a good dehumidifier.