Okay.. so I understand everything so far

Can i use my current light fixture for the time being.. and upgrade later?
As far as adding live rock...... what happens if you add it already from an established tank? i read the article I understand the concept of curing the rock (i think) I don't exactly have any space to put it in a bucket to cure... what kind of risk would i be taking?
what are the steps after you have the needed equipment to set up the tank.. can you add the LR sand/LR rock at the same time?? and then start the cycling process?
oh boy i hope im not getting in over my head

Sarah
So i was looking on craigslist...... they have 15-25 of LR for 25$ is that a good deal? It is out of his tank..... he downgraded.......... or it's taking a huge risk?
sarah