What you’re going through with the emotion reaction to up and down says is perfectly normal for first time investors, it gets better but only when you’d tart to understand why and have faith in your decision. I went looking because I knew it was somewhere and found this from the team.
For a first time investor this could be a great starting point, they have a glossary of terms if you’re not 100% of the definitions here too.
Good luck and hope you stick to this, it’s not necessarily a game you have to ‘play’ - setting and forgetting is often a very good strategy. We’re all very pro financial education around these parts so keep asking questions as you might create a nice Q&A trail for a user in a few weeks or months.