From what I've seen on this and other websites, starting out on the path to weight-loss is different for each person, but there are a number of aspects that can be generalised. My own experience of starting out seven months ago coincides with that of a fair amount of other commentators, and is roughly as follows:
Learn how and why fat is stored in the body. Find out what the major components of food are and how they relate to each other. Fibre, carbohydrates, fat, protein, nutritional balance, energy intake, energy expenditure, portion size, food energy density, etc. Also understand the difference between weight-loss and fat-loss. Weight can be lost (and gained), at least in the short term, by changes in water retention and muscle bulk.
2) Find out what you're initially capable of.
Your ability to exercise regularly, resistance to impulse purchases of food, stopping snacking and grazing, eating correct foods, ability to stay focused on a goal in either the short or long term. Different people have varying abilities to handle the above.
As a result, mix and match the above so that the result is the same - maintain nutritional value of food while lessening the energy intake so that fat stores are used up. There are other considerations of course, such as maintaining metabolic rate, but those are addressed in detail elsewhere in this forum (do a keyword search).
3) Don't be afraid of change and of trying new things - new food, new ways of thinking. Staying the same person doing the same things may be comforting, but nothing will happen in the long run.
4) Be inspired by the awesome weight-loss stories of other members of the forum. Ask questions, get involved.
5) Read the many excellent articles and use the calculators and charts on the main website.