The value of being a hybrid has gone down since the two expansions, as things demand higher and higher stats so it becomes harder to excel at more than one thing at any given time. That being said, you can still do things other classes can't, while perhaps not as good as you could if you specced for it.
So you said you're Feral. That's nice, you can go Cat for DPS or Bear for tanking, which is always very useful when questing. If you keep an off-set with Int/Spi you can also heal pretty decently until much later in the game. That's something you may wanna aim for, by the way. Two separate sets rather than a single one with a mix of all stats. That way, it's a bit harder to change role on the fly, but you'll do much better in each role when wearing the appropriate gear.
As for putting all points into Feral, it's up to you really. If you're mostly in Cat form, it's probably best to focus on Feral, at least until you reach Mangle. (Awesome new ability, completely replaces Claw) Like I said, with the appropriate gear you can heal just fine, and even while not wearing that gear you can heal in a pinch to buy a few more precious seconds.
And as for glyphs, at 33 you should have 2 major and 1 minor. Quite frankly, while leveling there isn't a lot of awesome Feral glyphs as they seem mostly tuned for end-game. I would personally suggest
Glyph of Rake and
Glyph of Maul. Rake will prevent humanoid mobs from fleeing at low health (as long as Rake is ticking on them), which can be useful in some situations and Maul lets you hit 2 targets with Maul (bear ability), which is great if you need to tank in a pinch or AoE packs of mobs. In the minor slot you can put whichever one seems better to you. I would suggest the Glyph of the Wild, seeing as you need to buff yourself, your girlfriend and her pet every 30 minutes so you won't run out of mana before you finish buffing everyone.
Feel free to
browse all glyphs available, just mind their level requirements.
So, umm, yeah... hope this helps a bit.
Enjoy your Druid.
Edit: I fail at linking... Edited, Mar 27th 2009 12:33pm by Selverein