Zingtea:I'm doing my AOW course with PADI this October holiday almost right after having completed my OW last month. My parents organized this with our instructor and I really wish we could dive a bit more before doing this. Am I overreacting? Should I only worry about this when considering Rescue Diver?
There is no harm in taking your Advanced Class relatively soon after your Open Water. However, you should feel comfortable in the water and be a fairly stable O/W diver before taking this course. Just remember taking this class doesn't mean you are an advanced and experienced diver, just that you've had some advanced training beyond that of an Open Water diver.
This training will help you to become a better diver. You will learn more about underwater navigation than in your O/W, you will learn about going deeper, about wrecks and their hazards, etc.
As stated before, talk to your parents if you don't think you are ready. If you do take the class now, plan to review the material again when you have about 25-30 dives under your belt.