Welcome purple.
Sometimes we don't notice that it's a first post - sorry about that.
Over the years, we've found people come here for a variety of reasons. Some just want us to answer their homework questions or (worse!) write their essays for them. They don't usually stay very long because we won't do it.
We believe the best learning takes place when people are able to work out the answer on their own, so we will always encourage you do to that. If something is a complete puzzle, at least tell us the source of your confusion.
I hope you'll get a lot of use from the online conversations with the teachers, native speakers, and learners here.