Well, your first transition meeting is probably going to only consist of going over medical history, parental concerns, filling out paperwork, etc.
Then, an evaluation of your child will be scheduled. Based on your post, I would expect evluations by a diagnostitian, OT and SLP. These evaluations will determine if your child qualifies for services since the standard for need is different once you hit age 3.
After that, an eligibility meeting will take place at which time an IEP will be drafted if your child qualifies for services.
So, you have plenty of time to "learn" the lingo :)