Creating an event takes about as long as filling in one form. We wrote it up as a single page with a screenshot for every step:
Follow the step-by-step guide to creating an event
In short: get the Laces app at laces.run/app, create your account and your organization, tap Create event, add tickets and dates, and share your event link. Creating an event is free: there is no subscription and no listing fee, and the per-entry fee is added at checkout and paid by the participant.
Once your event is live, Taking payments and getting paid explains how your organization is cleared to sell tickets.