WORK - What can you do? What hours do you have available? Would you prefer to work for someone else or could you work for yourself. If you had a career prior to having children could you go back to it either full or part time? Perhaps you could go freelance either through directly contacting companies or through an agency specialising in that field. This may give you the opportunity to work from home or go to a work place if you prefer. Some shops offer flexible working hours that may suit you and many businesses will be happy to take on people part time or on a job share basis. Check with recruitment agencies (many are now online.)
If you feel that you would like a fresh start and would like to try to train for something new then the opportunities will be more varied. It may of course take longer to start actually earning any money if this route is chosen. Opportunities may include NVQ training, but this may well involve work experience as well as taking time out to do course work. Training yourself will be a good investment for your future but you will need to be patient. It will take time.
Visit you local College of Technology to find out what courses are available - first and foremost choose something that interests you.