General
Hyperphysics--general physics browse
laser encyclopedia--wiki for optics
attosecond science workshop--many useful powerpoints and introductions for attosecond world

Related groups
KM Group -- Kapteyn & Murnane, US
Attoworld group-- Krausz, Germany
NBC attosecond group--Corkum, Canada
SLAC-PULSE Stanford group-- Bucksbaum, US

Center for X-Ray optics --good source for X-ray information, Berkley, US

Ultrafast surface science group -- Aeshlimann, Germany
ultrafast surface dynamics --Wolf, Germany

Paper search
web of science
Google scholar
Sciencedirect

Online journals
Science   Nature   APS   Phys Today