we were all noobs once.. and most of us still are haha. hardly understanding wat we are truly doing.. but if you are looking for guidance i will try and help
please check out this site
PSP Hacking Guide | Blast Processing
there is a fair amount of reading to do... but i suggest buying a new battery and a new memory stick (a small one like 512mb or 1gb)
and follow that site... if you need anything else then just ask
oh and bricking means that you have basically screwed ur PSP.. unbricking can often be done with a pandora battery which u will find out about if you read that guide i gave u
good luck