Most Trac Days are not a substitute for high speed driving instruction. For those new to trac events and/or have limited experience driving at high speeds on track we suggest you consider gaining knowledge and track experience at any one of the many instructional track events or at a driving/racing school such as Jim Russell, Bondurant or Skip Barber.
Also recommended are the Hooked on Driving track events which are geared for those new to track events as is the San Francisco Region SCCA's Thunderhill Performance Driving School.
Here's Hooked on Driving's 2008 Schedule (subject to change). To stay up to date on their plans we suggest subscribing to the HOD newsletter.