Which course depends on you and what experience you have before the class. The first level is the Basic Riders Class and is suitable for people who have never ridden before. It spends some time mastering basic skills such as finding the biting point in the clutch, walking the bike around (with and without power). It also spends some time in the classroom watching training videos. The next level up is pretty much the same class but without the clutch control or videos. The actual riding exercises are the same with very few exceptions.
So if you spend the next 3 months riding around your land then you might find the clutch control part boring but maybe the videos would be helpful? Personally I had never sat on a bike before so the basic class was perfect for me, though the classroom portion was boring. I had read Proficient Motorcycling before the class which covers the necessary street smarts needed to survive in much more detail than the basic MSF class. You can even download the BRC booklet and read that on your own.
Both classes typically let you take a test at the end for your endorsement but that varies from state to state so you might want to check with your local class what the rules are. And most insurance companies allegedly give a discount for those who have taken the training but I’m not sure how much that is.
Other considerations might be availability. In my location the BRC is offered frequently but the other class less so. Oh, and I’m not exactly sure what the next class is called these days. When I took it it was the Experienced Riders Class (ERC) but I thought it had been renamed Intermediate Riders Class but my local training company is still using the old name?
If you are riding during the next 3 months then there are plenty of materials out there to help you along.