No particular stock in question... But i have just opened a...

No particular stock in question... But i have just opened a broking account thru westpac. And have made a few trades here and there.

I noticed they settle 2 or 3 days after you make a trade. So just thought that if you buy $100k worth of shares even know I only have $50k in the bank but make $120k by the close of business, does that mean its all good ?

Again i apologise for the question, very new to all of this...