First time trying to grow, excited to see how these turn out!
The bad news here is that since they're seeds they needed to be in the dirt like...4 months ago now. So if these don't work out this year, try either getting a pre-started plant (and then planting them like, a month ago) or start your seeds indoors with warmth and light in like, February. Unless your growing season isn't what I think it is.
The good news is that if you're still in the part of the world I believe you to be, then both cilantro and jalapenos grow REALLY well here. I've got both out back. I guess the other good news is that everyone I do know that put their seeds out earlier this year it didn't work out because it's been such a fucking cold spring that most of the seeds waited until like, last week to sprout, and then immediately flowered and died. So it's possible that I'm wrong and your seeds will come out bangin.
Last thing, just some advice for hot peppers generally, once they start getting healthy and producing fruit (ie: you see some flowers and the lil peppers forming inside of them), take some nail clippers or scissors or a hole punch or something and just kinda mess a few of the leaves up periodically. You want hot peppers to feel like they're being attacked by bugs so they produce the spice which is their defense against bugs. You definitely don't want to damage the plant enough to make it not grow, but if you stress it out a bit by damaging the leaves it thinks it's being attacked by bugs so they usually up the capsaicin production. One of my family members is a farmer and gave me this tip when my jalapenos I was growing at a friends house kept coming out sweet, so the next year I went out and just nipped the tips off a few of the leaves once a week or so and that year most of them were much much hotter.
Anyway I hope this works out for you, I really started growing in earnest this year in my own backyard and I've been really enjoying it. If you have the space and the sun and the water and the time it's a fairly inexpensive hobby. Definitely not cheaper than buying them from the store but a whole lot more fun, and honestly is a really important skill everyone should know.