They say never more than 10% so you could a $5 SNG and see what happens. With this much I would probably pay with $10 at a dime cash table and then move up to $20 at a quarter table after I reached $75.
NO!! If you are talking about NL or PL games, you need to have at least 15-20 buyins (150-200$ for 0.05/0.10) minimum. Playing 25 NL with 75 dollars is totally insane. What are you going to do if you have even a small downswing? That could eat up 2/3 of your
bankroll in 5 minutes.
With ~60 dollars, I would suggest sticking to 0.02/0.05 if you feel you can beat the tables well, and 0.01/0.02 if you want more confidence. 75$ is enough to be rolled for 0.02/0.05 if you are able to beat the level consistently (which is another matter).
As for tournaments, try 10-15 buyins, anwhere up to 4 dollars would be good, a bit less for large tournaments. Good luck!