What do you want to do with it? If it is a long-term investment, and you don't need the money for a year or 2 - then there are savings accounts that pay a particularly high rate of interest on the proviso that you can't withdraw your money before a certain time period.
If you want to buy stock then, for a beginner you could do far worse than investing in a fund (but make sure you choose one with *very* low overheads, something like an index tracker fund). There are new products called 'exchange traded funds' where you can invest and withdraw just like buying stock in one particular company, but your investment is spread amongst all the stocks in an index.
If you want to do something outrageous and different then why not buy some gold? If you buy bullion coin, it is easily sellable. The dealers often have very low overheads and recognised coins often sell for somewhat more than the intrinsic gold value. Gold prices are relatively stable, and if the worst comes to the worst you could dump them on ebay as novelties (often at considerably over their real market value).