Hey Celeste, I suggest starting to learn Kana and some basic grammar. I recommend みんなのにほんご, it's a great book which teaches you basic grammar and walks you step by step. There's also kira sensei on youtube that uses the same book but it's in spanish, I hope you can keep up with his spanish but his Japanese is great.
Once you have the basics you should learn Kanjis, I recommend the Heisig method but I think everyone has its own way.
I hope this helps!