I agree with Mikael. The first step, is to invest in Komplete or going with a small subscription fee. It doesn’t matter at that point what bundle. Small, big. Whatever you can afford. You have plenty of options there and as I have written in my PDF that you can get for free (CLICK HERE), it’s unbeatable for price, quality and what you get for that.
Mixing is another topic that will come with time. I remember when I have started with all this and it took me years before I realized what’s happening inside a “real mix”. If you want to be successful and have a lot of fun during the whole music production process, first concentrate on one thing. In your case the “music”. After you made your first steps and have more confidence, you do the second step. Step by step. A lot of people do this mistake in the beginning. They do everything at once. Result: Never get to the level as fast as they could if they would split their focus! Remember that.
The last thing I would suggest you to do. Stay here in the forum and learn from and with others. You get so much useful information that will lift you up! You have nice people here everywhere that will don’t tell you things that are out of focus. That is super important in the beginning, as many people even professionals show you so many plugins, libs and other fancy stuff that they already have and say “you can’t live without that!”. Blah blah blah. Forget that. Nothing of that is important for you when you start music.
*PS: I started my blog and my YouTube Channel where I will talk about common music & audio production topics. Subscribe there. I tell you that because I will never say to you that “only I” know how to…and blah blah blah. My focus is on being as transparent and honest as I can be. If someone can help you more out than me, I will tell you that. Many people still don’t do it, or it least don’t mention that there out so many great possibilites to learn from. I want YOU to start the “right way”. And the right way is when people who tell you that like me and Mikael are 100% honest and transparent.
On more last thing: Ask, ask, ask! If you don’t ask, you will never know!