どんなレッスンなのか、どうかたいけんしてみてください。
どんなレッスンをきぼうするのかも、くわしくおしえてください。
You could  explain that you expect our lesson freely.

きほんてきには、かいわちゅうしんのレッスンです。
Basically it would be conversation lesson.
にほんごのみで、すすめたいとおもいますが、ひつようにおうじて、えいごでも、せつめいします。
It would be in Japanese only{most of lesson},but I explain if it would be needed.

日本語会話　Japanese Conversation

If it would be your first lesson with me,I recommend you take this lesson.
Let's enjoy Japanese conversation with me!
This lesson is set for only the person who haven't had any  lesson with me before.