Step1
Your not going to get big by sitting around and eating chips all day, you need to get out there and sign up at the local gym or buy some weights and use them at home. I would suggest investing in a home gym ie. Bowflex, they work but are a little pricy.
Step2
Nothing says big like a big chest and arms, work on your Chest, biceps, triceps and traps, the best way to bet bigger arms is to work on your triceps, do bench dips for triceps, for workouts for all body parts look for the links i provide later on.
Step3
Eat meat! After you work out, eat lean meats that contain lots of protein like chicken breast, steak and fish. This will get you really big because you muscles need this nutrient to grow.
Step4
Rest, after you work out you need to sleep, this is when your muscles actually do the growing, get at least 7-8 hours of sleep.
If your working out, don't work on a certain muscle group ie. chest, for more than 30-45 minutes, this is overworking your body and you need at least a week to recover and get back to your normal routine speaking of workout routines...(next step)
Step5
I suggest you get a full body workout plan, this one here works great http://www.askmen.com/sports/bodybuilding/28b_fitness_tip.html
Step6
Your not going to get better if you keep on doing the same weight, once you see than you can do a certain weight, move on and lift heavier, its the only way your going to get stronger.
Step7
Work on your forearms, its a really neglected part of the body, a sculpted forearm looks very good with a moderate tan.
Step8
Run run run! Its good for you health and make sure you stay hydrated when running for a long period of time.
Step9
Your not going to see results overnight, it takes months and years to see big results, just be patient and stay motivated, i guarantee you will see results if you stick to you personal workout plan.
Step10
Enough of the workout part...you want to wear clothes that fit you properly , tight shirts or tight anything you wear can bring out the parts of your body you want no one to see, ie. your love handles. Big baggy clothes make you look 4 times bigger than you already are, and thats not a good thing.
Step11
When/if your wearing a jacket or a long sleeved piece of clothing, roll up the sleeve to where your arm ends, the curls and wrinkles that will form on the bicep part of your arm will make it look ALOT bigger and sculpted, plus you wont look stupid with your sleeves rolled up, trust me.
Novice 
