Please just attend to this helpful questions amicably and be polite in your answers?
Where do I begins? What's the best wallet you're using? Where do I buy bitcoin with easy exchange without scams?
Finally, should I do it now that the price is not stable or I should wait a little in case it goes down again? We are all here to learn.
I'm sure you know that your question might bring alot of criticism and you should know that you must have to follow steps so stay profitable in the industry.
First thing first, which is that you should spend more time in studying and know the core things about what you're about investing in and just as it is said that knowledge is power, so you should try to acquire more of knowledge and once you do, I'm sure the profits might just start flowing in.
While selecting a wallet, you should try using the decentralized wallets and exchanges as it is always safer to use them over the centralized ones.
You can easily buy bitcoin on exchanges like binance and transfer them to your decentralized wallet.
And no time is bad to buy and now is also a good time to buy if you're hodling for long since we're still in the bear market.