Tube sites/books, recommendations please


After spending my audio life as a member of the solid state party, I am dipping my toe into the dark and mysterious world of tubes. I am purchasing a tube pre-amp in the next couple of weeks and am looking forward to doing some tube rolling. I am looking for any advice regarding either web sites or books that will help me get a basic education on tubes to get me started. Thanks so much in advance for any help offered...
lensteve
Pdreher, "BTW, don't stop with just getting a tubed preamp... you have to go the full distance and switch to a tube amplifier. Trust me... once you try a decent tube amp, you won't ever be satisfied with solid state."

I completely agree, and feel that's terrific advice. In fact, given the scenario where I could only choose of the two, I'd go with the tube amplifier. No doubt about it. Only a tube amplifier can truly provide the sound of tubes.
Thanks so much for the information thus far. It's certainly possible that one day I will get a tube amp, but recently I acquired a near mint McIntosh 2255 that was built in May of '82. This has been a long time want of mine and to me has a wonderful warm, yet accurate sound that I've always admired. I guess I'll see how it goes with the pre-amp and decide from there...again, thanks for the help.
I would also agree with the Brent Jessie recommendation. He is very helpful and honest!
Lensteve - what's the rest of your setup like? (Sources, power amp, speakers, cables, room dimensions, etc.)

Also a note on McIntosh - While I like their products and believe they're built extremely well, it's next to impossible to find a truly good deal on anything they've made. I wouldn't try to build the entire setup around McIntosh gear unless you can just throw around thousands like it's pocket change. A good idea would be to try to find someone in your area who's got a tubed setup and get to know them. Out of my tiny audiophile circle, I'm the only "tube guy", but my dad had tons of Mc, CJ, Fisher, Dynaco, and some older Citation amps.
Currently my setup is as follows:
Sources-McIntosh MVP-871 and Oppo 83 Exemplar edition
Power Amp-McIntosh MC2255
Pre-Amp-Utilizing my NAD T-765 Receiver via preouts (hence me purchasing pre-amp)
Speakers-Golden Ear Triton Two
Interconnects and speaker wire-Paul Spietz anti products
room dimension is 15'W, 12'Deep, 10'H