How do you learn to read Hebrew without vowel markers? (I'd welcome tips for learning Modern Hebrew, but I'm thinking more how to read Biblical Hebrew without vowel markers. Thanks!)

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How do you learn to read Hebrew without vowel markers? (I'd welcome tips for learning Modern Hebrew, but I'm thinking more how to read Biblical Hebrew without vowel markers. Thanks!)
Is there a non-creepy way for me to learn more about what happens at a brit milah/bris? Particularly how circumcision done in religious settings differs from circumcision done in medical settings (i.e. "routine" infant circumcision done without religious reason)?