Have you had a look at www.workingmums.co.uk? Thanks to the recession the part time sector is, in some areas, booming. Also, look at the temp recruitment sites - filing and general clerical work is often available - terribly boring, but nevertheless a job that will give you some breathing space whilst you think about what you'd like to do. I started life stuffing envelopes for the British Council at minimum pay but thanks to someone over-hearing me volunteering to do something because the usual person was absent (I think it was actually pushing the post trolley around) I ended up becoming someone's PA. I couldn't even type my name in under a minute at that stage, and I know from your posts on here that you are very intelligent, type well and are grammatically sound (with the exception of 'wrote' instead of 'written'
) - all your apostrophes are in the right places in your posts.
As for your CV, don't worry if you haven't got, in your opinion, a great deal on there. You are young - no one expects you to have achieved a huge amount. A huge plus is that you held down a job for 4 years. Many of the recruitment sites give you top tips on how to write a CV. Start with what you want to achieve, go on to what you have done. If you have any achievements, that's a boon - for instance, being made assistant manager, or being given control of stock, or similar. Then go into your education and also state what courses you are planning. Your CV doesn't have to be long.
Please feel free to email me if you'd like me to have a look at your CV.