ACMT - Where do I start? Book or video wise...

Hello Apple Communities.

So I recently began to use apple, Although I didn't know exactly where to ask this question I figured you people would be able to help me.

I love to repair computers, but I personally wouldnt repair a mac without the propper certifications, due to the components been a lot more expensive and a little more skill is required.

So I plan to study ACMT in hopes to use that and then also progress onto more advanced mac subjects.

But where do I start?

If I need books which should I read?

If there is videos which should I watch?

Could really doing with been pointed in the correct direction.

Thanks in advance.