1)1) The idiomatic phrase “for all I was worth” means “with all my effort”
2)2) The present participle form of English verbs ends in -ing. Its most basic use is to describe an action in progress, whether as part of a compound verb, an adjective, or in a participial phrase.
• She was humming and smiling at the sun when he walked up to the bench.
• We saw the running boy trip and fall, mere seconds before the bell rang.
• The ship sailing past us tooted its horn in welcome.
I hope this helps