Lattice QCD with dynamical quarks

An overview is given of lattice QCD with dynamical quarks taking study the QCDSF collaboration results for two and three flavours of dynamical quarks for hadronic structure. We first sketch the lattice simulation and the idea of numerical simulations and why it is a difficult numerical problem. Measuring correlation functions on the generated configuration then gives access to hadronic masses and matrix elements. Several examples are given of results ranging from the mass spectrum and decay constants to the computation of low moments of structure functions.