Training in Hung Gar is different with every master and school.
My experience is as follows:
1 Stances are low for training. For fighting, you are in a more relaxed and mobile stance.
2 Footwork varies from linear, to triangular, to circular, etc.
3 Centerline idea is used, and so are the 5 animals and 5 elements proceses. Strong forearms and shins are essential, letting you make contact with your opponent, preventing damage to yourself, and hopefully damaging your opponent.
4 All fighting ranges are used, long, medium, and short range. Fight in the range that you feel comfortable in.
5 Starting attacks are up to individual preference. Some prefer to wait for an attack, then defend and attack, or just go straight to counter attack.
6 We are taught to flow from the beginning, but it takes a student time to be able to move smoothly and be aware of his body.
7 Drills and step sparring are essential. You would need to be accurate with your techniques (ie: punching and kicking the air and targets), before you start working with a partner. We spar as often as we feel like it (ie: going over certain techniques, reviewing/improving movements, etc).
8 My master has been open with his teaching, encouraging us to ask questions, experiment with techniques, and figure things out on our own. How fast you see how and why it works depends on your coordination and your learning ability.
9 Most of the conditioning (stretching, stances, calisthetics) can be done on your own. Save class time for learning and improvement. This also depends on how your master teaches you; some spend 90% of the time on warm up and conditioning, and minimal time on actual teaching.
Hung gar has been beneficial for me, mostly because I have had a competent master. I would recommend almost any style of Chinese kung fu, so long as you find a master and school that you are comfortable with.
Keep in mind, with kung fu, the majority of time is spent on developing power and qi, and very little time is spent learning. It may take you a few minutes to understand how to throw a punch or a kick, but maybe a year to actually do it properly. To achieve killing power, it may take you 3 years of training internal power.
If you are serious about martial arts, train a minimum if 2 hours a day, everyday. If you just want a fun hobby and almost no skill, train only when you go to class (probably a few times a week).