You just got to do it. Are you the teacher or the student???
I'm a teacher and i visited all the 3-5 grade classrooms and asked how many students would be interested in joing a uke club. i then mad that many copies and sent homw with information. I had no budget so i had to get parents to buy the ukes. Once the students sent interest forms back to school i picked a day of the week and made copies of chord charts and I started meeting. We learn chords and songs. I do not know how to read music and I don't know notes so In essence I am learning things with the kids. We will be performing around March for the whole school.