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.
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.
Volatility is a factor of Bitcoin functionalities, jus like an inherent trait that Bitcoin works with, for investment purpose, since Bitcoin is best performed when viewed on a long term perspective, maximizing every price point to buy more of Bitcoin is the best, with DCA strategy of accumulating Bitcoin, one can buy Bitcoin irrespective of the price point either weekly or monthly and by so doing, you average out your losses by buying at different price point, yeah you are very correct that every transactions should be made with all alacrity and carefulness in order not to loss your coin out of carelessness.