My best advice honestly would be learning all the colors and their meanings, meditation, grounding, programming your energy, then try a basic spell such as a PSI energy ball. This was my first spell , and It worked.
*JUST A WARNING*
Don't expect these spells to work like media displays it. (Harry potter, avatar, ect.) This type of magic doesn't exist, and if it does, you more then likely won't find it here honestly. A lot of the spells you will read about things like that are Fluff spells, or spells that "fake" Keep in mind, it could takes days, weeks, or even years for some spells to work, especially the more powerful ones, which I wouldn't recommend trying until you're 100% positive you will be able to fully cast it. I would read also upon the law of the three, which is equally important. Good luck! and if you need any help, feel free to message any one on this website, including myself!