Your profile says you are 16. What subjects are you studying at school and what do you plan to do next?
BCS has some great advice about how to get into the industry, entry points, typical career paths, etc.
While it is perfectly possible to leave school at 16 and enter the ICT profession, your initial choices of role are more limited, with user support and junior web design roles being the more typical options available. These roles can act as excellent gateways to provide the experience to move on to other roles in a few years.
Alternatively, you may wish to consider staying on into further education to complete either a vocational course such as BTEC or HND, or A-levels and consider your options again at 18+.
You say you are confident in a few programming languages. What kind of projects have you undertaken in those languages and what can you show to a potential employer to demonstrate your abilities?
One great way to improve your skills and demonstrate your abilities to potential employers is by contributing to Open Source projects in your spare time.
There are a huge number of Open Source Java projects – take a look at The Apache Software Foundation and the Java.net community for some ideas of existing projects from two of the biggest Java project communities that you could help.
Most projects keep a todo list of items with which they want help – often as an issue tracker or roadmap. For instance, here is the list of outstanding issues for Apache Commons Lang 3.x.
Don't be afraid to try something new. With Java, VB.Net and PHP under your belt, you should be able to pick up Python, Ruby, JSP or C# with a little effort. C and ARM Assembler are a little harder, but will introduce you to some new concepts and help you get more out of the Raspberry Pi.
You are doing exactly the right thing, ask advice of those in the industry, any older family members (especially cousins) and friends and most importantly your careers teacher at school and the advisors at your local careers service. Your careers teacher will know how to contact the local careers service.
Oh, and do come back and let us know what you decide!