Time for some more off topic stuff \o/
Was out on the local common area (Royden park, Thurstaston, Caldy hill to anyone from around here) yesterday evening, just riding along, little bit craggy, knobbly roots everywhere and all that, shouldn't really be an issue... Then my rear axle snapped.
So after a fun 4 mile walk with a bike over my shoulders, I got home. Had a look at it, completely buggered. Took it to the shop this morning, the nice chap said it shouldn't have happened at all, and he's gonna get it sorted out for late next week. But I will have to pay as it's just out of warranty. ¬_¬
Now I've not really been into biking before, only had the bike (It's a Claud Butler somethingortheother.. silver, disc brakes, 3*7 gears, front suspension, hardtail) for a paper round, which I finished last September. But in the past few months, mainly due to the good weather, and me finally realising how awesome off-road biking is, I've really gotten back into it.
Thing is, my current bike (sans wheel) isn't that great, really. So I'm looking for a new bike. I've been looking around, but as I'm fairly new to this, I'm not really getting far in terms of personal knowledge

. So, rather than going back to the shop and asking there, 'cause frankly, I think they'd try and screw me over, I'm gonna pitch my question to you lot. You all seem far more knowledgeable anyway, than a 19y/o chav in a bike shop.
I'm after a good mountain bike. Front and rear suspension, sturdy and tough enough for a good thrash about the common/woods, lots of gears, 'cause it's rather hilly around here, not too heavy, and anything else you can think of that I've missed out.
Obviously, I don't want something that's absolutely top notch. Mainly because they seem to cost several grand, but I am looking to spend around £500, preferably under.
I just want a bike that is sturdy (obviously I'll take care of it, too

), a good ride, and will do me for a good while until I'm ready to upgrade parts, or move onto something bigger and better.
I'm 6'2 and of average build, if you need to know that, too
Cheers muchly
Oh, also, while I'm at it, what can you get in terms of puncture protection/prevention?
Ta.