I'm new to Linux and after trying and trying i was not able to solve a problem with a Adept Package Manager. Its give a message that i cant update or do any changes because de Database is locked.
By searching the web i found that was possible delete the file '/var/lib/dpkg/lock' adn i do this, but this not solve my problem.

And another problem i'm cant install any program because i dont know how to do this, if anyone can send me a tutorial it will become helpfull.
I was trying to install Xboard (a version developed for linux from the wellknow chess game Winboard) but all that i tried have fail.

Please, Please...HELPPPPPPP!!!!!!

Kind of shot in the wild here, since its ages since I've used debianbased distro. I remember having the same problem. If you open up a terminal and try to install a program from commandline, like apt-get install firefox or whatever, then the solution should be printed out. It was something like this
Try run dpkg-reconfigure
or something.

This might not work. Bad shot in the wild from me, but possibly a solution.

Try running
dpkg --configure -a

you said you are a newbie, and as a newbie i make this mistake;
are you trying that as root?

Do you have another package manager open at the same time ? like synaptic or something else ?

You can only run one package manager at a time.. trying to use aptitude or apt-get from a command line while synaptic is open will cause it to throw that same error message.