I am wondering if you had the opportunity to use the command line yet? It is not very hard and that is the simplest way I can think of, for helping you.
First let try to install flash in your computer so the steps are:
Open a terminal (LXTerminal)
Menu -> Accessories -> LXTerminal
and type on there (copy it from here and paste it there)
sudo apt-get install flashplugin-installer
It will prompt you to type your password so go head type your password and hit enter. Note when typing your password you wont be able to see the characters, dont worry that is a Linux thing for security so nobody can see what you are typing.
Let it finish and you should be able to play youtube once that is done.
Next install Shotwell to manage your pictures
copy and paste this in terminal
sudo apt-get install shotwell
Next onto installing google Chrome
Download chrome for ubuntu 32 bit here is the link https://www.google.com/intl/en/chrome/browser/
then navigate to the downloaded file using the cd command replace the username with your username
then issue the command
dpkg -i google-chrome-stable_current_i386.deb
if these commands starts working but suddenly stop issue the following command
sudo apt-get -f install
Here are some interesting link that you can check once you have a little bit of time
Let us know how it goes. Talk to you later