Low-mass stars form from the collapse of prestellar cores. Right after the core collapse a young
stellar object is formed, composed by the forming-star, the circumstellar disk and the envelope.
The forming-star acquire material from the disk and the envelope to increase its temperature up
to $10^7$ K and start the hydrogen burning. This work aims to summarize the general picture of the
state-of-the-art about the accretion process, which is responsible for the delivery of matter unto
the low mass forming stars until they enter the main sequence.