How to Become a Vegetarian
A quick and simple guide to help you become a vegetarian
So you want to be a veggie but you have no idea how to start??? The answer is slowly and thoughtfully, probably not what you wanted to hear.
It is actually very easy, just eat a normal healthy diet. We have all seen the charts, five vegetable etc. All you have to do is change that tiny 50g of protein from animal to plant-based, that’s two portions of legumes or soy. In fact, if you eat a normal healthy diet, minus the meat, you would be hard pushed not to get enough protein.
HOW DO I GET ENOUGH PROTEIN AS A VEGETARIAN?
Try to eat three whole grains, two legumes or soy, five veg and two fruit, three nuts/ seeds, two oils and two dairy every day.
I was taught. Eat a portion of legumes or dairy WITH a whole grain. This was way before soy products!

The theory is that legumes, dairy and whole grains all contain protein, but on their own, they are not complete. You have to eat them in the correct combinations to complete them, its an amino acid thing. More recently this has been challenged as a myth, so life has just got even easier for vegetarians, it is no longer a necessity to combine your food to get enough protein.
Here is a very good article explaining why
The advice now is, that if I eat a good combination of raw plant foods, legumes, low-fat dairy, nuts and seeds and whole grains throughout the day with my fruit and veg, I do not have to eat a cow.