REALLY HELPFUL
Oh god. I wish I discovered this sooner. My midterm is tomorrow in the morning. That website is really helping me with synthesis.
How to get an A in Organic Chemistry
It made me
Apathetic about life 
"It made me sadder and angrier than watching Hotel Rwanda."
How I did it: The trick to doing this is to take it at a place where they don't force you to memorize everything, but instead teach you guiding principles.
I used the Carey textbook and read the entire thing. I did most of the practice problems and I used the website (http://highered.mcgraw-hill.com/classware/selfstudy.do?isbn=0073047872) to get good at retrosynthesis. I'm definitely not an organic chemist, but between those two habits, I did fine.
Lessons & tips: Carbocations? Not so stable. Resonance? Really important. Ketone enol
tautomerization? Messes up everything. Watch out for stereochemistry, it comes back to haunt you all the time.
Resources: ACS review book saved my life for reviewing for the ACS exam. I heartily recommend it!
