Acetyl carnitine =/= acetyl choline. You make acetyl groups from almost everything you eat, it's choline you want. You'll find that in:
Lecithin (tastes like shit and you'll need "a lot" to get an appreciable amount of choline in you, I recommend that you stay away from it)
DMAE (very nice and I've actually found a source with a reasonable price)
Acetylcholine (haven't tried, but seems great)
A few dozen eggs a day. No idea about this, but "should" work if you really eat a lot of them.
I suggest you google DMAE 300mg
Try it on yourself to find the best dose for you. 2x300mg a day should "do", but try if more feels better. I'm gonna write a post in the Bran Function Boosters thread about what happened to me when I took too much aniracetam and too little DMAE. Will probably end up there: http://tnation.T-Nation.com/free_online_forum/diet_performance_nutrition_supplements/brain_function_boosters_30?id=3538227&pageNo=17