So I've been looking into investing into Bitcoin and it seems like the more I look into it, the more I find out about things I either do not know, or have questions on top of questions about.
First, I knew there was some kind of wallet I would need to hold Bitcoin. I wanted a wallet on my desktop PD (Windows 10) as well as on my phone as an app. Can I have the same wallet on two different devices like this? I didn't see a desktop version of the wallet on this website, only a previous version for desktops but I'm not sure if this is up-to-date & safe enough since it's an older version. Then I read about cold storage wallets (like a Trezor). These are probably safer, but are they practical and user-friendly in terms of using along side the online wallet. Is the Trezor a separate wallet or is it made to work with other wallets like the app? If it is only to be used by itself, what website/app should I use as an interface?
Then I was hearing people talk about a wallet address and seeds. I'm guessing these would be two different things. Where/when do I use each? Do I create the seed? Not sure where this comes into play. Can I make the wallet address the same on all devices, or is the address meant to change periodically for security? Then I read about keys AND backing up a wallet. So I'm juggling seeds addresses, keys, and backing things up.
I am mainly interested in investing in BTC, and not so much using it for everyday spending. It's a lot of money so I want to make sure I have knowledge. The last thing I'd want is to screw something up with permanent consequences. Perhaps a step-by-step guide or something similar would help insure I don't miss anything, or place currency into something I cannot retrieve.
I appreciate others helping me out and I'm sure I'll have more questions pop-up as I think of them. If you can post link to recommended apps/sites/hardware, etc this would help
Note- I don't know ANYBODY who does this so I can't ask questions or get guidance. I'm researching everything on my own, and it's very confusing at time because I don't want to make a mistake that costs me thousands of dollars, or accidentally transfer coins to some village in China running a scam.
Any and all help is appreciated.
Thanks