Yes, the loan is unsecured, yes you can extend it for Foundation Course and living costs. This is actually stated on the CTC website should you care to read it.
Not meaning to be rude, but when people say things on these forums, they don't lie. And the majority of the time, the answer you are looking for can be found without having to ask.
I suggest reading the last 6-7 pages of this thread again where the loan has been discussed in some detail.
Glad to be of help.
