How do I prepare for the EKT AFCAT?

Firstly, you should know that EKT is conducted by the Indian Air Force (IAF) for the technical groundwork and it is an online computer-based exam. The notification for this year has been released and the exam will be conducted between 20-22 February 2021 for both exams. You might want to note these down as well-

• If you are applying for the EKT AFCAT Ground Duty (Technical Branch) post, you must attempt both technical & non-technical papers.
• Know the Syllabus and Exam pattern to prepare thoroughly.
• In the non-technical paper, G.K. will be a decisive factor, so focus on that and acquire the latest and important information from newspapers. The reasoning section will be easy to clear if you've practiced enough. You just need to chisel your logical and analytical skills.
• You should understand concepts with total clarity, be clear on your Engineering subjects. Testbook has a good set of resources available. You can download and solve the complete mock test sets to be efficient and refer to books and videos through the website.
• Make a schedule and follow it without distractions. 
• It is advisable to download the previous year’s question papers from the official website of EKT AFCAT and solve those at least 2-3 in a sitting, it will give you a good idea on the type of questions asked and the subtle intricacies with which to attempt them.

There are some books you can refer to for preparation: For the non-technical paper- Lucent's GK; RS Agarwal's Modern Approach to Verbal and Non-verbal Reasoning; and MK Pandey's Analytical Reasoning can be referred to. 

For technical, you can read the Objective General Engineering by GK Publisher's; Let's Crack EKT by Shourya Publications; and AFCAT by Arihant. 

I hope this all will help you with your preparations. Be updated and enjoy the process.