Being an RE agent is tough. If you want to sell life insurance at least there are companies willing to float you a salary until you build some business. Not in RE. It's commission only for a reason.
Tom Ferry, a prominent RE coach, floats that 87% of all agents fail and other sources state the average 1st year agent sells less than 2 homes their first year in business.
If you want to get into the business to make money I recommend going to work on a team. You will see more, learn more, make more, and increase your chances for success.
Your income on a team won't be good but if you can subsist you'll be learning and hopefully you will survive your 1st year without filing bankruptcy. You will have a chance to move up if you have the right personality and intellect. It takes a certain type.
You can try interviewing with a few teams before paying for the classes. You might get a job offer. Don't expect them to be forthright about success rates, income, etc. These are sales people offering a commission only job. You are hereby notified they are not unbiased. Search it for yourself on google and youtube. There are some great anecdotal stories out there.
If you want to be a successful investor a high stable income is a better platform to start from regardless of what sector it's in.
Cheers,