1. Toilet training for toddlers typically begins between 2 to 2.5 years old, though signs of readiness like disliking being wet or soiled and ability to stay dry longer are important factors. 2. Patience is key as daytime control may take 1-2 months while nighttime control can take up to a year, and accidents will likely still happen occasionally as the child grows. 3. Resistance to training may be due to independence, fear of failure, or physical issues, and regression is also common around events like a new baby and can require restarting the process with patience.