Parking at 36 Degrees North
You can park on the street nearby, and all street parking is managed by the city. You can also park in a private lot immediately to the northwest of 36 Degrees North. It helps if you can download the relevant app before parking so you can avoid using a kiosk. Instructions are below!
City street parking:
There may be parking right next to the entrance. You can pay at a kiosk, or set up an account and use their app, which covers all downtown public parking. This is really convenient for any time you park downtown. It costs $1 per hour and you can add more time from anywhere through the app.
Here's a map showing the lot:
There is also a parking lot run by American Parking (who also does almost all private lot parking downtown). Depending on the lot, you usually have to pay for an entire day, which is about $3. Their app is also handy to have if you come downtown and want to make parking easier. Lot 2119.