You will find all sorts of great help and advice and support here. It's great that you are exercising...you'll find it really helps drive your weight loss and gives you lots of energy and motivation!
Leftovers of dinner make a great lunch! Some other ideas are a club salad with deli meat, tuna fish salad (with mayo) with tomatoes and lettuce, chicken salad (with mayo), 3-bean salad, etc. Great stuff!