Questions!!

Lots and lots of questions:

What can I or can't I take on the plane. I have decided to just take cabin luggage (more about finding the right bag later lol)..... so question 1 is what can I take in the bag.......

My laptop has to come and all my photo gear...... and then how many articles of clothing will fit it...........

And then there is my eyebrow tweezers.... no other cosmetic item (excluding tooth=brush lol)is necessary for me........ shall I just buy a pair when I arrive in Haifa?