I'm going to start putting $100 aside every pay period to invest in stocks. Any advice?

For 100$ start small with apps like acorn or Robin Hood and when you raise enough capital, then invest into more blue chip stocks + diversify....I used acorn and turned 120$ into $400 in a few months....going to mutual funds without meeting their minimum investment number is gonna be a huge headache to get by. Just do it yourself on your phone.