I'm planning to user LVM in my next Linux installation, any links to good LVM tutorials/guides/FAQs would be welcomed.
I found the LVM HOW-TO to be very clear.
It has probably more info than you want from a first-time tutorial, but reading sections 1. to 3. and 11. to 13. should give you a comprehensive introduction to LVM concepts and its usage in live systems; these days, most Linux distribution have good LVM support out-of-the-box, so you can safely skip the "Installation" and "Scripts" parts.
In my opinion one of the best resources for LVM was Red Hats LVM Administrators Guide, check it out.
These are literally the first few links I get from searching for "LVM tutorial", this stuff isn't exactly hard to find. ;)
Cover only basic things, but I like author's style. IMHO nice start for begginers: