If you want to branch into the world of construction, it might be hard knowing how to get your foot in the door. There's an old saying: "Its not what you know, its who you know" and i think this is important to remember. I was even told this at University in a Careers lecture! Doesn't do much for the old spirit, does it. Nevertheless, if you're looking for construction jobs, don't despair. It might be that you know someone through a family member who works in the trade. Use this contact! They may be able to offer you some part-time work and although the pay might be less than exciting, it is the experience you need. Have the dream that you can one day have your own business and your dream might just come true one day.
It may be that you are going to do a course at College. This will be beneficial to you because they can put you in touch with employers and you can work and study at the same time.
Find out as much information as possible from employers. Even if they cant offer you any work at this moment in time, ask to speak to someone who can give you advice about what employers are looking for and what the job really entails; including all the "grotty" bits. That way, when you go for an interview, you can make the employer aware that you are clued up on exactly what the job will entail. They will see that you have done your research and have a real passion for the work. I know it sounds awful , but "cold calling" can often unearth something really positive. You won't know unless you try and some employers might admire your tenacity.
My nephew is doing a construction apprenticeship at the moment and it is hard work, but he knows it is going to be worth it in the long run. Work like this is a bit of a dying trade, so if you have the skills and the right attitude, you can really go far. I think the problem we have these days is that many fathers / grandfathers have started their trade businesses many years ago and now the next generation aren't wanting to take over the reigns and do that sort of work anymore. Young people are being lured by the big money in the cities and it seems somewhat 'unglamourous' to be a proper grafter these days.
I think its sad that we're not embracing the real trades anymore. Hopefully, young people will realise the potential and want to get into construction.