I´m pretty new to this forum, but I have been playing for a couple of years.
What I can tell you is that first of all if you want to get a bankroll by playing freerolls
the $100 with 3000-5000 players at UB is NOT a good way to get quick money. What you need to do is to find smaller freerolls with fewer players like the cardchats freerolls. Another thing that you might want to consider is to take one of many nodeposit bonus offers that are available on the internet like yourpokercash.com or just google nodeposit bonus.
When it comes to the game itself I think that the best advice I can give you is that when the blinds increases to a level thats higher than your startingstack you need to think of your chips as units instead.
What I mean by this is that many players get nervous and starts playing crazy when the pots and the blinds gets really big, this is where you need to think of your stack in form of BB´s.
Lets say you have 35k and the blinds are 800/1600 you get dealt A4 off in early position what do you do? You think: You got an ace, big blinds, hmm lets take those blinds, you raise to 4000...
Lets say you have 900 and the blinds are 25/50 you get dealt A4 off in early position what do you do? You think: You got a shitty ace, bad position, the blinds are still low, hmm I better fold...
Now whats my point in all this?
First of all I´m not counting on that you personaly thinks like this but its a common mistake beginners make, including myself.
However the mistakes that are being made here are :
In the first example you got more BB´s (22) than in the 2nd example (18), but still you feel forced to gamble.
If you decided to raise in the 2nd example I think you would raise more than 2,5 BB´s (4000/1600=2,5) so that people actually would fold, maybe somewhere around 3,5-5 BB´s (175-250).
Lets say that you raise in both examples, in which example would it be easiest to fold? The first one? Why is that, when you got a bigger part of your stack in in the 2nd example.
Finally im not sure if this is to any help for you Im just telling you about the mistakes I made when I started playing.
1. Think of your stack as Units (BB´s)
2. When you decide to raise at higher levels make them belive you (at least 3xBB)
3. Dont worry to much about being chipleader early on because its not often early chipleaders actually win, last man standing