this isn't a tutorial, but I wasn't sure where to post, and i think i've seen a few books links here, so....
I've just received this by mail, maybe it could be helpfull to some of you....
BizTalk Server 2000 Developers Guide for .NET 9.08M
Mission Critical! Internet Security 6.57M
.NET Mobile Developers Guide 7.71M
.NET XML Developers Guide 8.25M
E-mail Virus Protection Handbook 8.36M
A DBAs Guide to Databases Under Linux Including Oracle and SQL
Bluetooth Application Developer's Guide 7.29M
Hack Proofing Your E-commerce Site 9.20M
Hack Proofing Sun Solaris 8 8.68M
Hack Proofing Linux 10.2M
I havn't read any of these, so I dunno if they're good. Hope it helps some of you...