1. People here limit their fruits if they are trying to lose weight. For some, cutting out the excess sugar makes the difference. If you are naturally skinny and you are not watching and limiting carb intake, go ahead and eat them. Some people have a problem with dairy, they're either intolerant (lactose) or they feel it inhibits weight loss or gives them headaches, etc, also, some types of dairy like cheese are very energy-dense and can lead to weight gain if you are mindlessly munching away on a pound of Brie and honey. Again, it depends on the person. Being a tall, skinny, young guy, it's unlikely that you will need to really watch your macros in fear of getting fatter.
2. You're an adult, suck it up and eat your vegetables, or find ways of cooking them to make them taste good. Remember, there are a lot of vegetables out there. You are not limited to bell peppers, tomatoes, carrots, and lettuce and most other popular vegetables. If you don't want to eat them, don't force yourself, just make sure you're getting adequate nutrients elsewhere. Also, cooking vegetables (particularly spinach) releases additional nutrients for some vegetables and also greatly reduces their volume so you're not faced with a huge ass bowl of vegetables that you don't want to eat. I was aghast at how my 8 ounces of raw spinach reduced to a mere handful after boiling.
3. Lift weights, get enough protein. Don't worry about losing muscle. Starvation mode is not happening until you're consistently eating a couple of hundred calories a day for weeks and months at a time. It's a myth. Your muscles ain't going nowhere unless you get into a coma and remain bedridden for weeks.
4. People here are concerned about nut fats because of omega 3/6 ratios. Omega 6s are the bad ones. I'm fuzzy on them myself, but again, you're not likely to be worried about that shit. Eat what you want, not too much, and don't overthink it.
5. I buy nothing organic or grassfed. I buy produce at the ethnic grocery store for dirt cheap prices, and they're probably laden with pesticides and stuff. Wash your produce and fruit thoroughly, and buy organic when you can, but it is not required. Most of us on MDA aren't rich either. Buy what you can afford; as long as you are eating meats, vegetables, fruits, and avoid processed foods, you are doing a hell of a lot better than most.
Good luck, and I apologize for the snark in my post.