Could someone help me dissect these sentences? うーん、いい出会いがあったらいいなとは思いますけど、難しい気がするから友達欲しいです。

ga and wa(ha) particles, could anyone tell me when to use which one? I know that ga is used to indicate the subject and wa the topic but I don't really know when to use them. Could someone please explain it to me, so I can get a grasp of it :p

when and why do you need to put an 'e' infront of the verb? e.g. unë e di kush jam

does anyone know any spanish songs that are rather easy to understand?

do you have to place 'de' in front of a word in spanish if you're talking about a quantity? ex. 'hablo ya un poco español' or is it 'hablo ya un poco de español'