Lightwave Tutorials On The Web Very good site with a large collection of tutorials & links. This is where I got started.
Flay.Com This is a really good Lightwave site. Lots of resources here.
Renderosity A very good site with tons of downloads though some cost money. The site is a 3d artist community and is mainly focused around Poser although it has tutorials and downloads for Lightwave as well.
Lightwave World Lots of high quality Lightwave stuff here. I like their idea for the layout too ;).
Lightwave Links A large collection of Lightwave related links.
NewTek Let's not forget NewTek, the official LightWave site.
Digital Producer Digital Producer Magazine. They have a lot of nice stuff.
CG Channel Another good site.
Digital Animators Not a whole lot of Lightwave stuff but some good 3d stuff here too.
3D Total A decent site with several objects you can download for free. Mostly 3DS but you can import those.
3D Links A good site with lots of 3D related stuff. There isn't a whole lot of Lightwave stuff here though.
3D Cafe A very good site with LOTS of objects to download for free.
Texture Cube A cool site with lots of free textures to download.Lightwave NewsGroups: alt.binaries.3d.lightwave / comp.graphics.apps.lightwave ( Also be sure to check out the Lightwave forums on NewTek's site they are really good. )
If I left out any good ones be sure to let me know. I'll add more as I find them.