Hi M.,
I learned a couple things potty-training my first son last spring. I'm the "scientist-type" of personality: I go through logical steps to try and figure out problems. I'm *not* the Mother-Earth type (don't get me wrong, I am jealous of M.E.-type moms who can get things done on intuition like that!), so if you're like me: this may be helpful.
Set aside a set date for potty training, and plan to be glued to the house for the first week at least (my husband would stay home with our son so I could get away). My son is a "sensory" kid, so I needed much more than one week.
Get your team behind you: if Dad, daycare, babysitter aren't going to support you: it will not work.
Summer's coming: Go Commando as much as possible. I know a Mom, that's *all* she had to do to potty-train her 4 kids (boys and girls) before the age of 2.
Buy a second potty for the car, so once he's trained enough to go to the store, you can take potty-breaks anywhere along the road.
Don't go to the next level of independence until he's ready. Example: I knew my son was finally getting reliable enough to not need an every-hour schedule when he 1) started asking to use the potty; and 2) I'd find poops in the potty, and have no idea how they got there - lol!
Don't turn potty-time into drama-time. Pooping is a fact of life. Getting excited over turds is weird, and makes your colon "inoperable" when you think Mom's gonna flip out over it (this is meant to be tongue-in-cheek). Like another Mom said, sit with him until he poops, and set pooping times (like right after breakfast), where he has to sit until poop comes out. "Commando" also works well for poo :)
Remember that potty "trained" does not mean "no accidents." It's a skill your boy will master over a long time: it's just the first week or two (or for some kids, a weekend), for the initial "aha" moment.
Most of all, trust your instincts that he is ready. Before the 1960's, everyone was potty-trained by 2 (2 1/2 at the latest!) and no one said boys took longer than girls.
Good luck!
t