2 years is way too old to start potty training n(unless the child wants it), especially since he is a boy. Boys tend to be delayed in things like sitting, walking, talking, potty training, etc. Most kids potty train around 3 years old. Having said that you need to read the cues from Aidan. When he is ready that is when you should do it.
i have a friend who "forced" the potty training on her 2 year old son and she regretted for the whole next year because he was not ready and had accidents all over the place.
You will find, if you wait until they are ready to do it the process will most likely be quickly and mostly painless. My daughter did it right before her 3rd birthday, I waitied until she was truly ready and we have had very few accidents since.
Also, when you do it, focus on doing it during the day, you will drive yourself (and him crazy if you try to do night time too.) I kept a pull up on her at night and when I finally noticed that she was usually dry in the morning we put underwear on her at night.
This can be an easy thing if you do not try to force it on your child.
Get a potty, I had one of each, the stand alone kind and the kind that went on the potty. But like I said I had a girl so it may be different for boys. Also, one thing other friends have tried when their child was ready was to keep potty's where the child is, playroom, etc. thatw ay it is there in front of them so they can see it and say "Oh, I have to go potty".
Good luck, and really, 2 years old is too soon to try unless your child is REALLY showing signsd that he is ready.