Your exploration of development of embryology can begin in many different ways, if at all you plan in beginning it unlike me. I attended just a few lectures of the few lectures given and we weren't given the class presentations' copy either.
I just read the few questions given in the BSR (and the answers were from the internet) before the finals, and my good luck-the question of the finals was there in the BSR.
Now, if you are wondering why I didn't learn the answers from the book. The problem with me is I require animations, pictures ( a lot of them!!) or videos to understand stuffs making it easy to learn. And, development is a dynamic process so what else other than pictures, animations, flash movies can make it better to learn from.
So,while browsing for embryology content in the internet I came across a very few sites which might be helpful for you as well. If you like animations click here and for pictorial understanding along with written content click here. Here's a website providing 3-D MRI of human embryo and collection of images.
Update: Read it in AP's blog- Embryology, so far, makes me wish the human race could have just stayed embryos -structures would have been much easier to memorize. Pharyngeal arches, cuter muscles and bones, and all of the organ relations were so easy before they went and twisted around on each other: Heart= central, liver= central, right side of the heart= the actual right side of the heart...c'mon (Special bonus: tails.)
That's awesome, right?!
NOTE:
* Consult your book along with the sites for the flow of subject matter.
* Since I didn't read embryology from the start, I don't know how complete these websites provide information. But,however, I liked them.
* BSR- Basic Science Review- a quick revision/review book by our seniors