Beginners may be confused, wondering how to tune a drum kit. The answer: don't worry about tuning your drums in the beginning.
Tuning the toms and snare becomes important when you want to record the drums and match the sounding frequencies to the basic tone of the piece. When you are ready: there are many instructions on the internet on how to tune the drums. In the beginning, this is less important.
However, you can play around with the tension of the snare head to shape the sound characteristics of the snare. The tighter you tension it, the brighter and clearer the sound will be.