Suggested Approach to Obtain Real Estate Licence

Hello BP community. We are newbies and still learning the terms and getting educated in the business. My wife and I are both in early 50s and the kids are out of the house and looking to downsize our current home in a year and then get in the real estate world to gain more revenue streams. Either my wife or me plan on getting our real estate licence in IL (Bartlett, suburb of Chicago). 

We are seeking your advice the best way to obtain a RE licence. Since I work full-time and my wife is a flight attendant her schedule is more flexible we think it makes sense for her to go through the process. Can you please offer guidance on best way to obtain a licence. She's an excellent student and we think that going on line would be the best approach however when I google we're paralyzed with options. Any help or direction you can provide is much appreciated.

If i am in the wrong forum, please point me in the right direction. I been listening to BP podcasts and went to one meet n greet so very early in the process. Open to all and any suggestions.

Thanks again. Michael & Jodi