PPRuNe is a wonderful resource to be able to learn more about the industry, whether you're a seasoned professional who wants to find out about a rumour or news item, or like yourself somebody who wants to get in the industry. There are plenty of us out there who are more than willing to offer advice and help, I suppose in return all that's asked is a well thought out paragraph with clear(ish) grammar and spelling. I think that's the only gripe from some of the regulars, and I hope very much you'll feel welcome and keep coming back.
Working for a handling agent is an excellent way to get a foothold in the aviation industry, giving you a good understanding of how things throughout the airport works, and a great place to network to meet people from other companies about the airport. The pay and conditions will certainly dispell any ideas that working at the airport is "glamorous" but despite the TESCO salaries, you'd certainly have more fun than shelf stacking or working on a till.
If you're working at a big airport, send off your CVs to all of the companies, allowing you to hopefully be picky when you eventually get offers. Include a brief cover letter explaining why you'd like to work there or in that job, and a well written CV to catch the attention of HR.
Just as a correction, though minor, to bluel0gic, GlobeGround outside of Germany is no more. The company was merged with Servisair a couple of years ago, and we now trade as Penauille-Servisair, the "Penauille" coming from the French company that now owns us. There have been rumours of just reverting back to Servisair in the future. The GlobeGround brand is still in Germany as the handler for Lufthansa.