Learning to work and manipulate energy takes time with connection and visualization.
To cast spells you need to learn basics of moon phases, colors, ritual tools, herbs, meditation, spirits, chakras, visualization and you generally need to develop a sense of empathy.
If you really want to get into this, you need to learn these.
You should memorize them, you may be able to start practicing from a few weeks to a few months, but even then you should never stop studying. Keep in mind if you decide to skip these, don't be surprised if you cast something only to watch it not work.