Well that's a shame you're begrundingly vegan, but I'm happy to see you here all the same.

I don't know about the studies you're talking about but if you're looking for health information regarding veganism I'd recommend The China Study. I haven't read it all myself but my vegan friend in school for nutrition swears by it.
On to the stuff I can help with! I recently wrote a document for my university food services about what is and isn't vegan. It has a list of the most common non-
vegan ingredients so if you like I can email it to you or try to post it here (but it's in chart format so I'm not sure that would work). The document also has a list of foods that need to be available on campus for vegans because they need these things in their diet - so that would also give you a jumpstart on things to make sure you have in your cupboards at home.
For meal planning tips I recently wrote an outline of everything I eat in a day for a new vegan on another forum so I'll just copy and paste it here so you can read it as well. That being said I also think it's important to think how you want to eat. Do you want to include fake meats? Do you need to watch that you get enough veggies? Is the problem that you're not getting enough calories? My diet is based on simply eating enough and getting iron, but it is by no means the perfect diet, just my lived experience of
being vegan.

So for breakfast I have:
a spoon of black strap molasses (lots of iron and calcium) or a spoon of peanut butter
orange/grapefruit juice or chocolate soy milk
wholegrain cereal and soy milk or plain oatmeal or waffles/pancakes that I make or toast
a fruit such as a banana, apple, strawberries or raspberries
For lunch and dinner I have:
one or two of the following (so in total I have at least 3 items from this group daily): veggie soup with lentils or stir fry or vegan soy/wheat based meat or vegan grilled cheese or salad with dressing made out of avocado or vegan cheese pizza or falafel or eggplant and sprout wrap and the list goes on as I'm sure you can imagine.
Side dish of some sort of vegetable which can be sweet potato, kale, broccoli, brussel sprout, carrots, corn and so forth.
For snacks some of the things I have 2-5 of the following things daily:
almonds
trail mix (that has peanuts, hazelnuts, brazil nuts, sunflower seeds, pumpkin seeds, raisins, and dark chocolate chips)
carrot juice
corn chips
date bars
vegan baked good such as cookies or pie
more fruit
hummus and pitas
bok choy
and so forth.