Commissioning and Early Physics at LHCb

The LHCb experiment has been designed to perform precision measurements on CP asymmetries and rare decay searches of B mesons. The LHCb construction and installation has been finished early summer last year. The experiment is ready to exploit first data from CERN's Large Hadron Collider (LHC). The very first data collected with a minimal interaction trigger should allow the space alignment of the detector to be performed. Then, when energy and momentum scales have been calibrated, the particle identification will be commissioned. The trigger will also be commissioned ready for data-taking in 2010, when LHCb's nominal luminosity should be reached and the full physics programme deployed. First measurements comprise inclusive particle production, where final states containing a pair of oppositely charged muons (e.g. J/ psi production) will be isolated. We will report on the commissioning of the different subsystems performed with cosmic data and the few particle beams delivered by the accelerator last year and the progress made toward the first physics measurements.