I stopped by Mokena, IL this past Tuesday. It isn't far from interstates I-57 and I-80 south of Chicago. This is the best course of the 7 courses that I have played in the Chicago area. 27 holes total, 24 of them were good. I didn't like 19-21 which were short and crammed into a dense woods unlike the other holes. Then you had to walk past 17 & 18 to get to 22.
This Mokena complex is great, I got a map inside which made it easier to follow. Inside restrooms too.They had a few bricks in the ground near some of the baskets pointing you in the proper direction for the next hole. A few more would help. Most holes had 3 tees with rubber pads. The course had mostly large mature oak trees to shoot around with some low ceilings to contend with. The length of the holes weren't terribly long or short. It was rather muddy due to the recent rain in the Midwest, I'd suggest waterproof shoes, until it dries out later, if it ever does(?).
Next time when I'm in the area, I'd play here and Cedar Lake, IN which isn't that far away.
Later in the day, I played in Buffalo Grove (9) and Palantine (9) both north of OHare. Buffalo Grove was very beginner friendly after hole 1 of 390 ft. It was also very crowded and windy. Palantine is more a challenge with lot of elevation and very narrow cut fairways around a reservior. It would be easy to loose a disc in the tall grass. It was windy as usual too. Don't go out of your way for these two.