The new MOD102 kit from www.modkitsdiy.com is a cool place to start if you are interested in building your first tube guitar amp.
All the parts are included pre-drilled aluminum chassis, wire and tubes (one 12AX7 and one EL84). The kit also comes with instructions and uses point to point wiring. You just need to supply the tools.
Click here for more information and ordering the MOD102 tube guitar amp kit.