It's one of the most important things to know especially for those who want/planning to start investing in Bitcoin. Fractions of a bitcoin can also be bought, meaning, it's not required to purchase a whole Bitcoin to start investing. Doubt starts from this misconception and makes them think twice about whether to proceed with the investment or not.

That's why it is important to do some research when investing to at least be informed about this kind of information. Not only on the type of investment we will make but even with the basic information like this.

   You are right mate, knowing when to invest is very important this still fall to having the knowledge about what you’re about to invest, and even when you have the idea of investing long term, starting with a tangible capital is a key factor because of  the volatility of the market, if you are starting with a little capital and you have the idea of holding for a long time there is every tendency that you might see liquidation,  but with tangible capital and proper knowledge of the market, you can scalp what ever profit the market will bring. 
  People need to be aware of the risk involve in investing just like every other businesses it’s either you get profit or you get lost, most businesses run to lose because of lack of proper structures same implies with bitcoin investment if you lack proper understanding and knowledge about the space you will end up making errors and remember that this errors cost money too as well. There’s is no rush to invest and they are no late comers, if you are short on capital to kickstart the project do not panic or feel your are behind, get your capital ready then gather the necessary resources and knowledge for your advantage.

several people have made comments on my Facebook account, they said they were interested in bitcoin but when they saw the price they withdrew, they said they couldn't afford to buy it but I explained patiently that you are not required to buy 1 bitcoin, you can just buy bitcoin. 0.01 - 0.001 and even 0.0001 bitcoin, this is why I say education about bitcoin is very important so that people out there don't see bitcoin in a scary version because only a few percent of people in this world can afford to buy 1 bitcoin fully.

Of course, that's part of their learning journey with Bitcoin. Knowing when to buy/sell/trade Bitcoin is part of the basic knowledge. But as I have said, this is a misunderstanding from newbies even with the basic knowledge where on how to invest in Bitcoin or in any other cryptocurrency, they still don't know how to start investing as they think they need to invest a whole Bitcoin which is impossible to afford to start their investment.

Making a profit, even a little, is better than making no profit at all. This also helps us learn about our psychology when investing. We may be investing a small amount today, but tomorrow we may have the opportunity to invest a large amount. It is necessary to gain experience to be ready for such situations.

Experience cannot be bought with money, so we need to gain experience to improve ourselves. Amount is important in investment, but not everyone can risk high amounts or have the opportunity to invest high amounts. Even making a small profit is better than doing nothing.