1st BuyNhold (Will take you years before you even get rich and thats if you put millions into BTC which I dont have) the low low prices are over, which now you require massive capital
You do not need to buy the whole bitcoin at once if you are planning to hold it for a longer period of time. The good thing about bitcoin is that people can buy it gradually depending on the users' risk apetite and financial status. Get some job and make an allocation from your monthly income to buy bitcoin maybe monthly or weekly if you prefer.
Anyways, welcome to the forum. Enjoy your stay here. There are lots of resources you can find to become more knowledgeable in bitcoin space, just read and explore.