Hello evryone

I am interested in beginning my career as a Salesforce Administrator and am searching for efficient training courses to advance my knowledge. Any suggestions for classes or materials that address the fundamentals; such as user management; security; customisation; and reporting, would be very appreciated.

Although practical exercises and online training would be excellent, I am also open to various methods. If you know of any credible programs or have undergone Salesforce Administrator training, please share your experience. Also useful would be information on how to prepare for certification.