Finding work can be a very stressful experience for anyone. You may find that you need to apply for several jobs before you even get invited in for an interview.
If you have very limited qualifications or experience, then you will often find it even harder to land the job you want and may be very restricted into what you can apply for. Some jobs have a strict qualifications policy, meaning you cannot even apply unless you have that qualification. If you do see jobs that you think you would be suitable for but you are missing some of the minor qualifications or experience then there is nothing stopping you still applying for the job, but be aware that you may not get asked to attend an interview. It may be that they are happy to accept you and out you through the qualification whilst you work for them.
If you are looking to train towards a career but want to be able to earn a small wage whilst doing so then an apprenticeship could be the way forward. Many businesses are now offering places as an apprentice, especially as the government are offering incentives to companies that do take on apprentices. Unfortunately, the wage is pretty poor but it may just be enough to get you by for the following two to three years.