a) you mean those line before the scorpion pit? those lines represent those platforms above the scorpion pit.you have to click them until they form one unbroken horizontal line.
when you have done that, you can jump up to the platforms (which will be in the same formation as those lines) and get across without having to battle the scorpion

b) its at the bottom right hnd corner (keep going to the right and down)

c) if you see a piece of clothing or hairstyle you like, click on the green t-shirt and click on the person with the item of clothing. it will take you to a screen where you can copy whatever you want

hope this helps!
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