Verb 'to be': present tense affirmative:
I am a student. I 'm studying English.
You are looking at this page, so maybe you're a student too.
This web site is useful. That's why I like it.
We are learning English on the web. We're lucky.
My friends are learning English too. They're beginners like me.
There is a lot of good stuff on this site. There's even animation.
There are a lot of good exercises.