Since the intent of all the three posts are the same, and the situation is the same, everything can be answered by everyone else in one thread. It is also easier for you to monitor the activity in a single thread.
Some of the alumni offers have already closed or expired. Don't worry. Read below to find out when is the suitable time for you re appear here.
My honest advise for you is to please come back after graduation, once you have your degree and an offer letter in hand. I would even prefer when you receive your 3-months of pay, payslip etc. Don't lurk around here because out of temptation you may apply, possibly get in a card, and not knowing how to manage debt can lead you to a rabbit hole.
It is nice to have the curiosity and see what is going on, but considering your current situtation, I am only advicing you based on your situation.