If you're a beginner then the easier more forgiving irons the better.
For around £50 you could do a hell of a lot worse than buy a second hand set of MacGregor M455 irons.
Forged irons from a reputable company for around 50 quid on the bay is a complete bargain imo.
There's also the slightly less chunky but very similar in appearence M565s, these can also be had for cheapy cheap prices and they're still a top quality iron.
Just for reference the M455s won the best "game improvement irons" for two or three years on the trot in Todays Golfer.
MacGregor M455s
MacGregor M565s (don't worry the "tungsten inside" lettering is only a sticker)
If you want something to last you a little longer then perhaps look into a set of Mizuno MX23s or possibly MX25s.
These will cost a little more but will be worth the extra outlay if you get the golf bug.
Not out and out game improvement irons like the MacGregors but you could play with the Mizunos until you wear them out!
If you keep your eye out you can get either set for under a hundred quid.
Mizuno MX 23
Mizuno MX 25
If you're a novice golfer just taking up the sport can I suggest to leave the driver for the time being.
Not only is it the hardest club in the bag to hit consistently, it could also put you off golf for life if you don't feel like you're hitting it well.
What you need is a nice forgiving 3 or 5 wood, something like an old Nike T40, Callaway X, Taylormade Burner or similar would be good as they have a nice big confidence inspiring head and don't cost the earth.
Stay clear of Titleist or anything with Tour in the name, as these are designed for the better player.
How fast do you swing? You need to find this out before making a purchase as the shaft is arguably more important than the actual cluhead.
There's no point in going out and buying a senior shafted 3 wood if your swinging at 110mph, equally it would be pointless you buying an extra stiff shafted wood if you've got a very lazy slow swing!