• Visit the official UKPSC website at psc.uk.gov.in
• Click on the "APS Recruitment 2024" link or notification
• Read the detailed notification carefully to understand the eligibility criteria and application process
• Register and create an account on the UKPSC online portal
• Fill out the application form with the required personal, educational, and contact details
• Upload the necessary documents such as educational certificates, identity proof, and photograph
• Pay the application fee as per your category
• Review and submit the application form before the last date
• Keep a printout of the submitted application form for future reference

The key points to remember are to carefully go through the notification, provide accurate information, and submit the application within the stipulated timeline. Candidates are advised to regularly check the UKPSC website for updates and important dates.