Welcome to the forum.
Get a free account on and use it to count calories of the food that you are eating.
Check out all the information in the different sections here - particularly the sticky threads.
Start a diary. Read other people's diaries and see what they are doing to lose weight.
Many people benefit from joining a challenge. They are listed in the challenges section. I am actually kicking one off in the next few days - so feel free to join in.