What age is a good age to start potty training? And any tips and tricks to help potty train a girl?

Usually when they start showing signs. Like grabbing at their diaper when they go or taking off their diaper or showing interest in the toilet.

My dd did at 15 months. We started actively potty training at 18 months. We went out and bought a potty seat and left it in the living room for her to play with and examine and get used to for 3 months.

I read a tip to put panty liners in their underwear to help with accidents once you get started potty training for ease.