Just ask a simple question, my life is not long enough to answer that. A good wine, there are millions of them from Rioja to Retsina,some go well with red meat others with fruit ect it is an un-answerable question,please be more specific.
At the risk of sounding like some celebrity wine-w*nker may I suggest the following steps?
1. Go to Tesco.
2. Look for any of the following Reds: Cabernet Sauvignon, Merlot, Shiraz, Pinotage, Grenache or combinations thereof.
3. See if any of the above are on special offer, you can usually find one or two at half-price so look to spend about Â£4.99 or so or knocked down by 2 or 3 quid.
4. Buy a couple of bottles, spend about Â£20 or so on a selection.
5. Take home and drink, repeat over a month or so.
I guarantee you will find a couple of wines that you really enjoy amongst the above. Red wine is a bit of an acquired taste, unlike many whites like Chardonnay or Liebfraumilch for example, which can be quite sweet and user friendly. Reds are well worth persevering with however. The first gob-full can taste a bit strong but once your palate has gotten over the initial taste you'll find it improves remarkably. If at the end of two or three glasses you really don't like it then don't buy that one again and move on to another, though preferably not on the same night!
Recommendation? Try Wolf Blass Yellow Label Cab.Sav, very nice indeed, usually about Â£8 but very often on offer at about Â£6 or so.
Further to my last, as a rule don't be tempted by anything which is normally sold at less than four quid or so. Apparenty it costs Â£2 to just put the stuff in the bottle anyway, so what you're drinking really is cheap slop.
If you're in Tesco try their Sicilian Red, it really is a very drinkable wine. Wolf Blass Yellow Label Cabernet Sauvignon is also a great wine but I, personally, think the Presidents has more occasion.
I had an excellent bottle of Faustino something-or-other in a restaurant in Fuertaventura a few years back and wish I could remember which one it was, I shall now start to experiment with Spanish wine again, and Sicilian too after the recommendation above!