Is it worth it?

I understand the question is very vague, but I am completely new to crypto and investing in stocks, I know absolutely nothing about it but I’m thinking of getting into investing in some companies like Boeing or Lockheed Martin. I’m open to trying some cryptos or stocks and I understand I won’t see a return for a bit of time most likely and I understand I may even lose money. But I’m not sure how to go about these things, is there apps for my phone? How does this all work? Can someone give me a head start please or some advice? Thank you in advance