Either that person is your enemy and not your friend, or knows absolutely nothing about gear and just went off what's the most popular steroids on YouTube right now.
Not only are you to young to be starting, but tren is the absolute worst thing to start with! And 600mg of deca? Where did they pull that number from?
If you're dead set on using gear and don't want to wait until you're over 25. The first thing you need to do is get blood work done. But (and I don't recommend it)
you can look into anavar (again you should wait a few more years) but anavar in small doses 5mg to 10mg per day will do a lot for a healthy female with proper diet and exercise program. It will give you the boost you want without turning you into a man. Of course steroids and women always come with risks, just like men. Deeper voice, excessive hair growth, other... growth. But anavar seems to be the most mild on side effects while still giving you what you want from gear.
I don't know who gave you that advice, its truly terrible advice. Instead of starting with possibly the most dangerous one, tren, and way more deca than any woman would ever need.
(In the future) you can
try a 8 week cycle of anavar at 5mg a day. Make sure you protect your liver because oral steroids, even at a low dose can still cause issues.
But honestly, don't do anything! Not yet, wait until you're at least 25 years old! Take the next few years to train harder and eat better. While researching steroids and their affect on women. STEROIDS ARE NOT MAGIC, they can cause more damage than good. It's a big deal, treat it as such!