Candidates for BECIL Recruitment 2024 must apply online through the official website www.becil.com or https://becilregistration.in. They should have scanned copies of their photo, signature, birth certificate/10th certificate, and caste certificate ready (each file should be within 100kb). If applying for multiple posts, they need to register only once. The registration process involves seven steps: selecting the advertisement number, entering basic details, providing education/work experience details, uploading scanned documents, previewing or modifying the application, making online payment, and emailing scanned documents to the specified email ID.