Hello and welcome!
In order to do spells, you need to learn your basics first - meditation, visualization, centering, to name a few.
I don't know what website you visited, but you do not need to be a wizard to become a spellcaster. You just need to get your basics down first.
There is a "newbies" section on this site which will help you out with starting out.
Mastering spells takes years of learning, and even then spells are never guaranteed.
The best of luck on your journey.