Simple question where do I start with Bitcoins?
right here, on this forum
But kidding aside, it's up to you... Why are you interested in bitcoin? The technical aspects, the fact that it's a method of sending and receiving funds, or are you looking to invest?
If it's the technical aspects, i'd probably tell you to read the whitepaper, or one of the many technical books... And if you have questions afterwards, you can come to this forum to ask them.
If you're not interested in the technical aspects, i'd still urge you to watch a couple introductory movies, afterwards you can download a (testnet) wallet, exchange some funds and start right away...
Just make sure that you always remember that crypto transactions are irreversible, and there are many scammers (there are scams outside of the crypto community aswell, but since crypto is relatively new, the scammers seem to get away with more than in an offline environment). The fact that crypto is irreversible and you don't need to meet up IRL to send funds makes the scammers even more bold... If you're suspecting something is fishy, it never hurts to come to this forum and ask advice before sending money.