Ghusl is an Arabic term to the full-body ritual purification mandatory before the performance of various rituals and prayers, for any adult Muslim after having ejaculation or completion of the menstrual cycle. However, wudu or just sleep, without either, are acceptable prior to performing ghusl.
Upon completion of menstruation, the female is required to take a ritual bath to begin praying her five daily prayers. This bath is fairly simple, but there are a few obligatory acts that need to be met to be considered ritually pure. Below, we have included a step by step of the process.
Step 1: Intention (Niyyah)
The intention to make ghusl is NOT obligatory, just recommended (sunnah). In other words, if you forget to make the intention before beginning, it does not mean that your ghusl does not count.
Step 2: The Three Requirements of Ghusl
There are three requirements that are obligatory (fard) to meet in ghusl. They are:

Passing water through the mouth (gargling)
Passing water through the nostrils
Passing water over the entire body, including your hair

It is important to note if even one hair is left dry, your ghusl is incomplete. Use sufficient water, without being wasteful, but also without being frugal.
Step 3: The Five Recommended Acts of Ghusl
There are five recommended acts (sunnah) of ghusl. Your ghusl is still valid if you do not actively do these, but they are recommended.

Washing hands up to the wrists
Washing the private parts and the parts over which uncleanliness is found
Intention
Making wudu (ablution) before washing the body
Passing water over the whole body three times.