SEO is making me nervous

Hi everyone

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I am new in the digital world, and I read a lot of SEO articles, I watched some videos but still have questions that won´t let me relax.

I wrote this big-ass long post (more than 2400 words), but how do I know it will get indexed? and how much time is it going to take?

Can I speed up the process?

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How can I manage my own links in an effective manner?

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I also have the AMP plugin installed it is giving me a lot of errors really. almost 200

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Thank you guys