Learn Turkish: Yarınki sınav için umut veya endişe hissetmiyorum. - I do not feel hope or worry about tomorrow's exam.

The suffix -ki is used here to turn the time word yarın (tomorrow) into an adjective. It means "tomorrow's" or "the one that is tomorrow". Because of this suffix, yarınki can directly describe the noun that follows it, which is sınav (exam).

The English translation says "about tomorrow's exam", but doesn't için mean "for"?

Yes, için primarily means "for". However, when talking about feelings, thoughts, or preparations, Turkish often uses için where English would use "about" or "regarding". So sınav için literally means "for the exam", but "about the exam" is the most natural English translation here.

Why is there a double "s" in the verb hissetmiyorum?

This is a compound verb made from the noun his (feeling) and the helper verb etmek (to do/make). In Turkish, when combining certain short nouns like his with a helper verb, the final consonant doubles to make it flow better. That is why it becomes hissetmek (to feel).

The translation is "I do not feel" (simple present), so why does hissetmiyorum use the present continuous suffix -yor?