Advice on improving swim workouts

Hello everyone!

I'm currently in my first year of university and trying to get the most out of my swimming.

Firstly, I really enjoy swimming and I took a lot of lessons when I was younger and have somewhat kept up on my swimming over the years. The problem is I only really know freestyle and breaststroke to a decent level and I've never swam with a squad.

I've been swimming in my local pool daily which I joined for a week so far and I'm really enjoying it. I've been doing about 2.0-2.5km each day (usually sets of 10 in a 25m pool with rests in between.)

What I'm hoping to gain out of this is burning more body fat and building stronger muscles but I've read a lot of the topics on this subreddit and I feel not knowing butterfly puts me at a big disadvantage.

So any advice on where I can go from here would be greatly appreciated :)