I make approximately $500 a month. What is the best way for me to grow my money?

I don’t have much knowledge about finance and I really want to do better with my life. I’m currently searching for college courses to help me get better jobs but in the mean time what can I do to invest or save my money wisely?

Some details

I don’t have to pay rent, utility etc.

I only have to pay for my dog and any extra expenses (eating out, shopping, entertainment etc.)

I keep $150 per month for expenses mostly on my dog (her medication, food, grooming etc.) I use the remaining money on my Etsy shop if I need any supplies.

The rest of the money I put in savings. I’ve saved about $2000 over the past few months.