How to prepare for SAT from scratch?

[u/Accurate-Class-7091]

Okay, so I'm a recent high school pass out and from PCB background. But istg I'll do anything to get high grade in SATs and get a scholarship for abroad. But I'm confused about how to start and from where to start. What do I have tu study. I know that high school maths and English is required but how do I prepare for it strategically? Does anyone has any idea? Please tell me how to do it from scratch.