Attempted Title: Brain Pain with much assistance from [link]

Well, guys, if you remember my journal from the beginning of the school year, I am trying to teach myself Japanese. So far, Verbs seem kinda easy (I can do certain commands with a couple of verbs,) I've only gotten down Hiragana and Katakana, or at least I did. After starting to memorize Kanji, I keep getting more and more lost. I don't really know how to explain it. I mean, I don't really know where to go or anything. I've been really confused with the Kun and On readings, for one thing. Like, when do I use kun or on? What's their purposes exactly, I mean, why not keep them as the Chinese originally had them? And while I'm fussing over this, I think my Hiragana and Katakana are going down the tube. As for Desu, I cannot understand that four-letter word for the life of me.
Eck. I dunno. I really wanted to learn this language for years (how weeaboo of me,) but it's been really frustrating lately.
Effing bears, I am really confused.
I could use some help, Internet-sensei. ┐(￣ε￣ )┌