Your ticket shows the county and court information - look for:
County name (usually at the top)
Court address
Citation/case number
To look up your ticket online: Visit the clerk of court website for the county where you received your ticket. Use their case search feature with your citation number.
Not sure which county? Check where the violation occurred - that determines the county. For example, if you got your ticket in Miami, it's Miami-Dade County.