I won't pretend to be a personal trainer, but Ive gone through much trail error in the past year and a half and it wasn't until a little over 5 months ago that I started a routine that started packing on the pounds.
I suggest that if you don't want to be skinny, forget working out your forearms. They will grow with your other workouts. Do compound workouts such as the squat and the dead lift. Those will get you a lot of mass in your back and legs. For chest, my favorite are the Chest fly and the dumbbell press. Arms, skull crushers and dips for triceps, curls and pull ups for biceps. Shoulders and Neck, shrugs Should work good. Abs, crunches till failure. Sounds like a lot, but keep in mind you should spend 45 min to an hour atleast wieght lifting. also, only do one muscle group a day, for example: chest/bicep on one day, tricep/back another day. Do some research to see what you like.
A good routine wont mean anything without a good bulking diet. No unhealthy food or drinks( or Atleast not a lot, NO BEER, stick to liquor). Try to consume at least 2500 to 3000 calories a day with whole grain, oats, pasta, fish, chicken, and red meat. I use a lot of supplements( pills, mass gainer, protein shake, and pre workout) not needed, but it helped me get 10 pounds of lean muscle while staying at 10% percent body fat, so If you want fast results( almost half a year fast though) i suggest you look into it. So yeah, hope you get the results you want.
@opspe
Yeah, I know a lot of people who hate gyms. I just have a well stocked home gym myself so I don't have to deal with the horrors of public gyms. But yeah, I prefer working in a gym because I have different goals than you and need weight lifting to bulk. But jogging is great and I wish the weather and air were I lived was better so I could do that.
@ Patrick
I know what you mean. People think 45 pounds each hand Is nothing for a dumbbell press, but it doesn't actually work like the bench press and Is a lot of weight( for me atleast)