To start with I want to say that for most people, getting beach body abs is not an easy task. It requires dedication, but if you do dedicate yourself you will get the results!
Below is a general step by step guide, that if followed religiously for 3 months, will produce results.
This is the most important information I can give you in gaining a six pack, hands down. You can have the most impressive six pack, but if they're covered with a layer of fat, you won't see them! Split your day with 5 or 6 mini-meals because this jump starts your metabolism. You will need to stop eating the food that is preventing results eg white bread, loads of pasta, fizzy drinks, sweets, fast food, hydrogenated oils and sugars.
Try and replace them with foods that will help you reach your goal eg oatmeal, olive oil, whole grain breads, fruits, vegetables, nuts, eggs, natural peanut butter, chicken, fish, protein and water. But you will slip here and there and that is ok, but make a conscious effort to radically improve your eating habits because getting beach body abs will be impossible if you don't.
You need to concern yourself with 3 different exercises: cardio, weightlifting and ab exercises. And aim to workout 3- 4 times a week.
The cardio you do can be anything: walking, running, biking, swimming....whichever cardio you don't mind doing so that you'll stick with it. Aim for 30-45 minutes, a minimum of 2 times a week.
Weightlifting is important because 3 pounds of added muscle burns as many calories as a 1 mile jog...and this is while you're just sitting around! Aim for 30-45 minutes, a minimum of 2 times a week. If you're confused as to what exercises to do for each body part, check out out the following website. It features professional bodybuilders, but the information is great and can be used by anyone.
The last exercise you need to incorporate into your workout is ab exercises. Aim to work abs a minimum of 3 times a week. There are a ton of different ab exercises you can do so try to find 3 or so that you enjoy doing so you can mix it up. A good database of different ab exercises is:
Tip: mix up your workout routine every 2 weeks to keep your body guessing and changing. Add or take away different weight or ab exercises, or at the very least, vary the weight, reps or form of cardio you do.
Well, there you have it. Follow the above for 3 months religiously, and while results will vary from person to person, you will experience improvement.
It will take dedication on your part, but imagine the feeling you'll get when you look in the mirror and like what you see.