And if you're torn about when to start the toilet-teaching process altogether, let your child be your guide. Don't feel pressured by others (your parents, in-laws, friends, siblings, coworkers, etc.) to begin. Many parents of past generations started potty training much sooner than many parents do today. And it all depends on the child. Kids will let parents know when they're ready.
If your puppy is not sleeping in her crate or pen, and is out in the house, you must follow her around to know what she is doing: chewing a bone, running circles, getting a drink of water, etc. In fact, don't take your eye off of her! If you cannot watch her continuously, you must put her back into her pen or crate to prevent potty training "mistakes".
Sometimes kids (and their parents) need a dose of humor, instruction, and inspiration to move the potty training process along. Here are some books that may help smooth the way.
This method is the most effective and flexible. Your pup needs to develop his natural "den instinct" and learn where to eliminate - and where not to. To potty train our puppy we must condition a desire in the pup to avoid soiling the "den" - your house. Confinement and your due diligence in providing access outside the "den" to potty and poop will develop this instinct and eventual desire. When and how to use confinement is described in detail below.