Where do I start?

I dont know a thing about Bitcoin, and from what I've tried to read its very confusing to me. I've been interested in dipping my feet into Bitcoin but no idea where to even start. Im currently 49m, been working same job since 2018. I currently have 401k and global shares. Don't know if any of that matters or not. But wheres the best place to learn about Bitcoin and where do I buy and invest in Bitcoin ? I've asked some older family members but they aren't into it. Thank you all for any help and knowledge!