Yes, if you prefer lighter wines I'd definitely stay away. I tend to prefer medium to full bodied wines (which usually tend to have the higher alcohol levels) with a lot of complexity. I do like some more straightforward wines, especially if I'm drinking at a place with the typical 300% markup.

But I usually go for fuller bodied wines that are well balanced and interesting... I don't like ones that are just "big" but aren't balanced to the point where one aspect of the wine is overwhelming. I've had wines where the alcohol overpowers everything and you lose a lot of the fruit and flavors. Those are what I consider low quality. I recently had to taste a Cabernet Sauvignon from Chile that had very harsh tannins to the point where the rest of the wine was lost. All I could think when I drank it was how overwhelmingly rough the tannins were.
If you like lighter wines that are very nice, I'd recommend Beaujolais. I particularly have had some amazing Brouilly and Fleurie, though any Cru Beaujolais will be nice. And of course Burgundy Pinot Noir. I also enjoy Charmes-Chambertin and other Cote de Nuits wines.
I have The Wine Bible and it definitely is a great way to start learning about wines. I also recommend The Oxford Companion to Wine, which contains a wealth of information.