In the present article we focus on dynamo transition, that is behavior of dynamo near its onset. Some of the important problems in this study are: what is the nature of the bifurcation from the fluid state to the dynamo state with a magnetic field?, how is chaos generated in dynamo?, what leads to the reversals of the magnetic field?, how is dynamo affected by forcing and geometry?, etc. In this article we will describe some of the recent experimental and simulation results related to dynamo transition.