The Web site www.scdiet.org is actually the official SCD site.
The diet is as much work as you make it. If you bake alot of almond flour stuff (which you shouldn't be doing when you first start the diet) and always eat complicated recipes, then yeah, there's a lot of cooking involved. But if you eat simply, you can make it pretty easy. I buy organic meats - grilled chicken, deli ham and turkey, scramble eggs, make quick stews in the crockpot, bake squashes, pears and apples, boil or nuke veggies and veggie mixes. If you do want something made with almond flour, there's a quick bread recipe that's cooked in the microwave you can whip up in five minutes. I'm not big on cooking and I don't spend alot of time in the kitchen.
To know if the diet is helping you, you have to give it at least a month and sometimes much longer. Any type of dietary manipulation is not going to be a quick fix. It doesn't work like pharmaceuticals. Dietary changes allow the gut to heal in that you're eating things that are easily digested by a compromised gut and you're beginning to rebalance the gut flora. I actually experimented for a couple of years with diet and supplements before I found the combination that would allow me to maintain long-term remission.
The only way you can know what foods are problems for you is to keep an accurate food journal. When you have a flareup of symptoms, look back over the past couple of days to see what you've eaten. Jot down the foods you suspect might be a problem in the margin. Over time, you'll see the patterns develop. Eliminate the culprits and see how you feel. After a couple of weeks, reintroduce them. If you're going to have a reaction, it will probably be much stronger when you reintroduce after clearing it from your system and then you'll know for sure.