I wish I could understand Japanese

So hiragana is practically just natural sounding words, and katakana are more foreign words? Or onomatopoeias?

Uh, sort of. You have the Katakana part correct.

Hiragana is for everything. It's used in everything, but Kanji is used instead in most cases for better understanding. For instance, like English, Japanese has many homophones (words that sound the same but have different meanings). Words like 端 (hashi - edge), 橋 (hashi - bridge), and 箸 (hashi - chopsticks) need Kanji to be differentiated for instructions or rules so they're not misinterpreted. In vocal Japanese, however, that's unavoidable, so it's all about context for spoken JP.

In one Japanese folk tale, there's a kid who reads a sign that says, "do not cross this bridge," but it was written in hiragana, so he took it out of context (out of spite, of course) and said that it meant, "do not cross along the edge of the bridge."

Oh, I see, リアで = talking about the future? That's what I used context for.

At least I understood the rest of it better than I thought I would on the spot.

I don't plan to use it in real life because I've nowhere to really use it. I don't go outside or anything. The most use I'd find for it is on the internet. I already read Japanese blogs to the best of my ability, so I may join in commenting some every now and then.

So far I haven't really gotten bored of it. Mostly because there's a lot of crap I wanna read and listen to that are just in Japanese. I'm learning Japanese just for my own personal hobbies. I've no plans on moving to Japan or translating in real life or anything.

Uh sorry. ria = short word for "real life." And for the rest of what you said ~ 分かった b( ^_^)b