I always enjoy browsing the "How do I" section, as reading and attempting to solve these "logic puzzles" was my main method of how I learned to use construct 2 in the first place.
Coming from zero programming background, reading responses and answering questions as best I could as well as trying to recreate game mechanics I loved from older games and understand what is making each action work is how I got comfortable with C2.
I have seen a fair share of threads like the ones referred to in this thread, and even if the poster is asking for something rudely or demanding his game be made for him if the topic interests me I will take a stab at solving it.
Once instance i recall In particular, I was having troubles with myself was attempting to make a Megaman styled slide action. I worked on it for hours and could not get it to function how i wanted, got something close enough, asked for help posted my .capx got responses and help although it still was a bit off after the fixes but that was more my method than the help, after scraping the original code I found a better method using logic from help I received.
I later saw a thread asking for something similar and someone had already posted a .capx so i looked at it and while it had a great method mine was different so I edited the .capx that was posted and uploaded my method to give the original poster options and the guy still went on for 2 pages being more then unpleasant and blamed Construct for being broken.
(http://www.scirra.com/forum/megaman-x-dashing_topic72660.html?KW= this is the thread i was refering to)
Kind of depressing really.
But I digress, as the majority of posters on these forums seem like nice reasonable people.