It's like saying you will put all your effort into something, for example 'she will put all her effort into whatever she does'. So she will try really hard and give it her best to do whatever it is she is doing. I hope I explained that okay and helped you.

It means the same as 'what have you been doing?'

Peronsally I have never heard of this expression before and it doesn't really make complete sense to me either so it might be a translation from another language.

I personally would leave the 'a' out of the sentence and say 'what kind of bird is that?'

To answer this question in a different way, the main differences between any type of English is pronunciation, some spellings and some word usages. For example, color vs colour. The use of the words such as 'pants' differs in America and Britain.

It depends on whether you mean 'can you learn it fluently and like a native?' or not. It's possible to learn it at a basic level and be able to use some phrases and communicate with others, and the more you practise doing this, the better you will get at it (which will speed up the learning process). But I personally think that it would be very hard (and possibly even impossible) to become extremely fluent and sound like a native within a few months because it takes a while to learn all the vocabulary and correct grammar of another language, especially if that language isn't similar to your own.

You can also say 'Hola, soy Tracey'. (although this translates as 'I am Tracey' but it holds the same meaning) I hope that helps :)