No matter how many of those infomercials you watch, that claim you can have really prominent abs in just a few weeks, the truth is it just isn't going to happen. Unless you are already in shape with a low fat percentage, then you'll discover it takes a long time to really make a difference. An abs workout plan will certainly help and you should try and develop one as soon as you can.
It is important that you train your abs often but not to over train them. You need to allow significant time for them to grow and repair between exercise sessions. So whichever muscle group you are training, don't train them 2 days in a row. This gives them enough time to rest and grow.
Another important tip is to make sure you are doing the exercises correctly. It is important that you feel your abs burning when you are training. If you don't then there is a chance you aren't doing the exercise properly. If this is happening, try changing a small part of the exercise and see if it makes a difference. If you are still unsure then ask for advice from someone who could advise you.
When starting out, you will be training 2-3 times a week. You should alternate between aerobic exercise and anaerobic exercise. This has been proven to be the best way to lose fat from your body, whilst maintaining muscle growth. So when working out your ab workout plan, make sure the days of training are staggered. This is very easy to do and also prevents you from becoming bored or tired with a particular exercise. The extra change can keep you motivated.
So depending on your current fitness level, whether you are a beginner or advanced, you should write down an ab workout plan as soon as you can. They are the muscles that take the longest to train and are the hardest to maintain. So the sooner you start, the better!