You do not need a license to browse the site, attend most club activities, or start learning. Use Start Here to understand the Technician license path, then use the Exam Trainer and current question-pool resources to practice.
Check Events for VE test sessions, meetings, breakfasts, demonstrations, and other activities. The New Ham Starter Pack guided path is a good next step when you want a structured sequence instead of browsing individual resources.
You may listen to amateur-radio activity before you are licensed. Transmitting on amateur frequencies requires the appropriate license and operating privileges.