In this bear market, does 100$ on Ethereum or Bitcoin make any difference? As a newbie who have only 100$ to risk is this even enough? Can this get me anywhere?
For a newbie, thats good enough as long as it is the money that you can afford to lose and not meant for important things. Much better to buy Bitcoin then hold for long time. Currently the price is still cheap if we compare it to its last ATH. There's a chance for you to double it if you can bear waiting for long. But before that you have to gain knowledge first to better understand the nature of investing in crypto.