At one point or the other, we all need to buy bitcoin, but when do you actually buy it? or when is the best moment to buy bitcoin?
This is why you need to analyze everything before doing something. You can't just jump into he hype where the price is already at the top. Stuff like reading your graph, technical analysis, some tools to help you analyze even more better if it's good to buy or not and etc. I mostly just follow where the tools lead me to, if the tools told me to not buy it then I simply not to do that. It's not always the same everytime you do the trade.
What if I invest in an altcoin that booms and then take profit from it to buy more bitcoin?
You can do that, there is no limit to what you can achieve when trading.