Ok, so I've taken the time to listen to all 3 of your songs, and I gotta say; for the level you're at I'm pretty impressed. 3 Originals with no expansions used? Not something I'd attempt with my first shots.
I personally feel like this one here is the better of your work so far. I gotta admit though, after a little while they seem to be kinda bland. More variety and possibly the addition of noise/dpcm could change the piece for better or worse.
I'm sure if you keep working at it, you'll be caught up to me in no time at all though. You're doing good so far. Just continue experimenting around and you'll find many things that you like. I'll be looking forward to what you end up doing with this. :)
When I started Famitracker I first learned from a tutorial set on Youtube through 8bitdanooct1's channel. Anything past that is all pretty much self taught. Just keep at it and you'll have yourself a nice fun little hobby at your fingertips. ^^