selber and selbst mean the same thing and are used in the same way. usually, people have a preference, some argue that one of them is less formal (that would be "selber"), but that's out-dated ❤❤❤❤❤❤❤❤. basically, the only difference is locally or sometimes socially predicated. however, Libor correctly brought up the fact that "selbst" has the additional meaning of "even" when it is switched for "sogar" (which would be the ordinary german term here) (e.g. "Selbst kleine Kinder können das" = even small children can do it -- "selber" as a rather younger part of the german standard language has not aquired this meaning.
Deine Mutter ist so fett und hässlich, selbst Chuck Norris hat Angst vor ihr.
Yo momma so fat and ugly, even Chuck Morris is afraid of her.
..., even Chuck Morris himself is afraid of her.
..., Chuck Morris himself is afraid of her.
The three English sentences above all mean the same thing, So perhaps the version with "himself" and without "even" is a parallel with the German usage, and demonstrates how the meanings of "oneself" and "even" can be covered by the same word.
German allows flexible word order, which means you can switch around elements of the sentence to change the emphasis of the sentence a bit.
"Das weiß ich" means just the same as "Ich weiß das" but puts a bit more emphasis on "das," or sort of makes it the topic of the sentence ("That I don't know myself").
It's perfectly grammatical. "Myself" is an "intensive pronoun" here, just adding emphasis to the fact that you're talking about yourself. It doesn't add any actual meaning to the sentence; it just sets up the idea that you don't know but someone else might. Likely a "but ..." would follow this sentence: "I don't know that myself, but so-and-so might know."
i have absolutely know clue how to figure this one out. i got it wrong according to the solution here but for some reason i was still right?
i do not know myself i do not know that myself
i do not understand either of these. they have different meanings and the sentence was scrambled? are there more word order rules that just haven't come up yet?