Feels good actually to invest and have a saying to have an investment in crypto and not just an ordinary crypto an Apex one to be precise which is way more cooler.
However, there comes a factor to be considered
CAPITAL. Capital stands as a major factor to be considered while investing however coming to the world of crypto and BTC precisely, I think small capital won't do this considering the current monetary value for BTC.
Remember the greater the capital the higher the profit and the higher the risk however considering BTC the risk minimal.
So How Much To Invest??As I've said earlier, investing little in BTC now won't give you a tangible profit when the profit comes but its advisable to invest 20- 40% of your capital in my opinion .However as a eginner or newbies, you literally know nothing about investing even if you have an idea you are still new to it so it is advisable to start with little amount to understand how the game is being played before considering any percentage to add in your investment and this should be strictly done according to your capital.
This is what I think but I know members with investment knowledge and others with more and deep knowledge could have a best saying but according to me this whati have to offer to newbies though I'm also a beginner

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OP, as a newbie that is desired to invest in Bitcoin, what I would want to advise is for you to take out time to study about bitcoin, do your due diligence before making your investment. Because it is when you've known how the market works, that's when you can know the exact amount for you to invest, wether it is small or large amount of money.
When you're well educated about bitcoin, then whatever decision your making will be referred to as an informed decision. Because as a beginner, you need to do more research and ask more questions from the field marshal's just the way your doing now before taking the bold step of investment.