Usages of sich
sich setzen
to sit down
important: this is a movement towards a direction (down) you are standing and moving into a sitting position.
sich wünschen
to wish (for oneself)
Er wünscht es sich.
He wishes for it.
Er wünscht es sich so sehr.
He wishes so madly for it.
Elon.io is an online learning platform
We have an entire course teaching German grammar and vocabulary.