how to make sure no one sees your computer history?

I erased all the history on my computer but im still worried that it may be seen again...is it really gone for good??

how do I make my computer screen smaller so I can see everything on it

how can I check to see where someone has been (what websites) on my cumputer if the history has been cleared?

how do you make a friendship rose with your computer keyboard or on your phone?

How do you make two pics into one? Like of two people into one?

I know how to erase stuff from my computers history but only one by one. I have hundereds that I want to delete but how do I ...

I want to be able to look at the web pages visited on my computer to see if someone has been on it and cleared the history th...

I want to clear my internet history and chat history permanently from my computer cause I share one. I'm not sure how to do i...

Okay I don't know if they are really called blends or not, but you know those things that fans make all the time, that are re...

does anyone know how to make like a peace sign symbol on the computer?!? if there are any other interesting signs please tell...