Problem installing packages and upgrade on Debian Image - Need Help!

Image Used: BeagleBoard.org BeagleBone Debian Image 2014-05-14

I get the following error when I try to install any package such as mysql or phpmyadmin:

root@beaglebone:~# apt-get install mysql-server
Reading package lists… Done
Building dependency tree
Reading state information… Done
The following extra packages will be installed:
heirloom-mailx libaio1 libdbd-mysql-perl libdbi-perl libhtml-template-perl
libmysqlclient18 libnet-daemon-perl libplrpc-perl mysql-client-5.5
mysql-common mysql-server-5.5 mysql-server-core-5.5
Suggested packages:
exim4 mail-transport-agent libipc-sharedcache-perl libterm-readkey-perl
tinyca
Recommended packages:
mailx
The following NEW packages will be installed:
heirloom-mailx libaio1 libdbd-mysql-perl libdbi-perl libhtml-template-perl
libmysqlclient18 libnet-daemon-perl libplrpc-perl mysql-client-5.5
mysql-common mysql-server mysql-server-5.5 mysql-server-core-5.5
0 upgraded, 13 newly installed, 0 to remove and 29 not upgraded.
Need to get 8684 kB of archives.
After this operation, 86.1 MB of additional disk space will be used.
E: You don’t have enough free space in /var/cache/apt/archives/.

So your out of space.. There's only 2GB on the eMMC of the original
BBB and 4GB on the rev C.

So you can either remove stuff you don't need, or use a microSD card.

Regards,

hi Robert,
Can you tell me how to use the sdcard?
regarding the command “apt-get update”

Even i change the sd card to 8GB, it still says not enough space.
How can i do that?
when i remove the sd card, the BBB doesnt want to boot up.
Am I missing any step here?

thanks

please guide me ( new bie)

http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Expanding_File_System_Partition_On_A_microSD

Regards,