Welcome to VV and congrats on making the switch!
One thing you can do is make vegetarian versions of meals you already like. Do you like pasta with meatballs? You can make pasta with a meatless sauce and vegetarian "meat" balls. If you like lasagna, you can make a vegetarian lasagna.
There are a lot of ethnic cuisines that have inherently vegetarian dishes or can be made so. Chinese, Indian, Italian, Mexican (such as burritos with beans and rice instead of meat). You can use tofu as a meat replacer. I recommend consulting cookbooks for those cuisines for ideas. It would be good if you like beans, since they're an excellent meat replacement, with lots of protein and fiber.
I tend to eat a lot of salads, since I prefer light meals to heavy meals. I love salads because they're a blank canvas: I can throw a lot of different things into a bowl, including different kinds of vegetarian proteins, and mix it up with a special dressing and, along with bread and fruit and sometimes soup, make it a meal. I don't know if you like salads (not everyone does), but if you do, that's an idea right there.
Oh, and yeah, soups. There are a lot of great vegetarian cookbooks out there that can tell you how to make substantial vegetarian soups that can be turned into a meal, along with a salad.
If you don't have a slow cooker/crockpot, you should consider getting one. There are great one-pot vegetarian dishes that can be made in a crockpot, which is a busy person's best friend.
I hope that helps, to start. You might want to start a new thread specifically asking for help so that more people will see it and offer suggestions.