Question for those who sleep trained

Hello! I'm about 38 weeks and thought I'd gathering resources on sleep training before I get to sleep deprivation.

For those who have sleep trained, do you have recommendations for books or method you used? And also around what age you started? Ive already been recommended Healthy Sleep Habits, Happy Child but looking to see what else is out there. Also would love to hear about your experience because I know every baby is different.

I'm not looking to be convinced to not sleep train or be told this is neglectful parenting. Every medical and psychological professional in child development that I have talked to has recommended some form of sleep training (was even getting this advice before we even conceived) so I have already been convinced to do some form of sleep training.