Before getting started with Bitcoin, there are few things you actually need to understand. First you need to know that the Bitcoin ecosystem allows you to exchange and transact money in so many different ways than you normally do. so before using Bitcoin for any serious transaction, you should be well knowledgeable about how the Bitcoin system works and be fully aware of the problems associated with the fiat system.
As you are new to Bitcoin these things may seem very unique. however, these issues have been discussed many times before, so there is nothing new in discussing them. But as a newbie I appreciate your research and careness
Also note the following
1. Note that Bitcoin transaction are irreversible. Therefore one need to be extra careful while doing transaction.
2. The price of Bitcoin is still volatile i.e it does not have a fix price for it market price.
3. It requires your own effort to protect your Bitcoin.
Before these you have to remember that Bitcoin should always be held in non custodial wallet. And another thing is not your key not your bitcoin.