Alhamdulillah.
Once you testified the Shahadah, and you believe it strongly by heart, you are already a muslim.
However, in accordance with sunnah, you need to do it in front of other muslims, and so they can also help you learning your deen.
Remember Islam is a way of life, and it takes your lifetime to learn it.
I am a born muslim and yet I am still learning something new each time.
As mentioned above, from the moment you made your shahada, you are like a newborn, your past mistakes and sins have been erased and forgiven Insha Allah.
So use this very very special moment to make as much du'a/supplications as sincerely as you can to Allah SWT, to always guide you on the straight path, to make your eeman grow stronger, to give you safety and success in this world and hereafter, to keep away the fires of hell and to put you into jannah along with other mu'mineen, etc.
learn Islam in your own pace, and implement what you learn into your life.
May Allah always guide you on the straight path, my brother. Amiin
