Today was my son's 3rd birthday. I say was because even though it's only 10pm here, he's already asleep. So for all intents and purposes, it's over. I think he enjoyed it. He'll enjoy it more tomorrow, because the kindergarten has a big monthly 'birthday party' for all the kids with a birthday that month at once, so he'll get to celebrate again tomorrow.
Anyway, along with the two books we ordered for his present--a couple of early reader books about Superman, Batman, and Wonder Woman--the 4E Essentials Rules Compendium came as well.
Kinda surprised at how small it is (15.5 x 23 cm, roughly B5 paper size, I believe). It also looks fairly concise and thorough, from what little I've already seen of 4E. I think I made a good choice if I want to really get a handle on the system of 4E (rather than on the catalog of powers and magic items and such that is the PHB). This looks like all the nuts and bolts stuff in one book.
I'll give it a read in my spare time, and eventually post a review of it here.