I think it starts by knowing you will need some savings to get started and weather the storm of not getting paid for a few months until sale start closing.
1. The market is hot, there is a lack of listing in some markets but sales are strong and steady. When sales slow, an agent has to keep attracting new clients from others by doing something that gets them recognized, such as provide great service.
2. You can do either, interview with small, big, local and franchise companies. Some have their own re classes and others you will need to take on your own. Ask what they charge to work there, what they pay to work there and do they give you leads. Bigger is not always better as some smaller companies will give more hands on training
3. Part time is near impossible. You have to be available when your clients are free. Some best part timers partner with a full time agent and work hand and hand with them as a team.
Being an agent is about getting experienced, choosing a company that supports and trains you, making yourself stand out and promoting yourself on sites like Active Rain,