Question on HDFC Sec from Newbie!

I'm newbie to this commodity business, I planning to start commodity trading though HDFC and I would like to have your comments on few of my questions below.

1. Just for the start plan to invest only 10K, is that enough fund or do I need to invest some more?
2. Since I have savings account with HDFC, Im just plan to startup with HDFC: any comments on this.
3. What is Debt Transactions Sell? If possible any one give me an example.

Thanks in advance.

I use HDFC SEC for long. They suck and worthless like ICICI DIRECT with high brokerage and web based platform which will not work from time to time.
I do trade (intraday mostly) with Indiainfoline as they have a gr8 software with all charts.
HDFC SEC though reliable the brokerage is very high and eats significantly into your profits. They are not flexible like others in negotiation of your brokerage, even if you ar a prefereed or classic customer of HDFC Bank which is the parent company of HDFC SEC now (see the change of logo etc)

So I suggest you to select a different broker.