OK, I hope this answer helps, (I've tried to keep it as simple as possible).
1) At the top of your CV, start with your name, address, phone number and email address. Don't include your nationality, DOB etc at the top (this comes later)
2) Write a 5-7 line introduction about yourself. Use this to showcase your key selling points. For example, if you're applying for a job in marketing, use the profile to demonstrate what skills you have surrounding the marketing industry. Avoid sentences such as "hard working, good in a team, good working alone" as these are seen in 99% of CVs
3) Next, go onto either your employment details or academic achievements (whichever is most recent)
4) Use bullet points in your employment descriptions to make it easier to read, and, where possible, create "Achievements". This is another great way to showcasing your key skills
5) Next, include details on any relevant courses - especially if they relate to the industry you're interested in
6) For "Hobbies and Interests", only include these if you have any "different" hobbies or ones which specifically demonstrate your interest in marketing.
7) Personal details, such as DOB, nationality, marital status, driving licence, should be the last section of your CV
Hope this helps!
As someone else has already mentioned - there is no need to mention about your children. When it comes to personal details, all that is needed is your name, address, phone number and email, together with DOB, nationality, marital status and if you have a driving licence.
If you don't have a driving licence and you're not married, then there is no need to include this information.