
It’s very realistic, even with zero experience, most people who invest successfully started exactly there. Index funds are popular because they’re simple, low-maintenance, and don’t require you to outsmart the market (which even professionals struggle to do). It’s absolutely worth learning the basics, but it’s not a deep rabbit hole, you can understand enough to start safely in a weekend and let time do most of the work for you.
And yes it is worth it if your money is just sitting in a savings account. I would also look into high yield savings accounts (HYSA) for shorter term savings. Interest rates on these are coming down fast but they’re still vastly superior to a regular savings account. I only keep money needed for spending within 30 days in my regular savings. Everything else is invested in index funds, HYSA, or my 401k