flashing backlight night and day,
I keep my flashing lights on night and day too, but if you are only going to use one (whether night or day), the front is the more important one. You are more likely to not be seen by a driver (and therefor get hit by a car) that is turning into or out of your path at an intersection than by a car than it is to not be seen by a driver coming up behind you, so its the front light that makes you more noticeable where it counts the most.
To the OP: main tip is just actually get out there on the bike only path and start riding. Nothing written down is going to make a bigger difference in your skill and confidence level than actual on the road practice.
Once you are ready to move on to real streets, you already covered the single most significant thing: follow the law.
Personally, I follow most laws, most of the time (I live work and ride in the Berkeley / Oakland / Richmond area too, including part time jobs at the Berkeley BikeStation and for the East Bay Bicycle Coalition) - but I can't say I come to a complete stop for every single stop sign or never ride on the sidewalk (though its rare, and only in special circumstances). However, if there is a car, pedestrian, or another bike on the cross street who has the right-of-way, I will always yield to them. Its just that when there is no one on the cross street (and especially at the many stupid 4-way stop-sign traffic-circles that Berkeley has) it takes up a lot of time to come to a complete stop and a lot of effort to get back up to speed on a bicycle - time and effort which a car driver doesn't notice, since gasoline is doing all the work for them. When you have to ride 15 miles, and there is a stop sign every couple blocks, that is a LOT of wasted momentum, energy, and time.
I always wait at red lights when cars are around (on either side of the street), so that they see I am obeying the same laws as they are, but if there is no one around on either street, I'll occasionally run it. No different than jaywalking - yes, its technically illegal, but its easy to see the difference between
technically illegal and actually unsafe or obnoxious.
Jaywalking in front of cars so that they have to brake for you (like so many people do in Oakland) = obnoxious. Going all the way to the end of the block to cross on a desolate street = silly.
Incidentally, Berkeley has made a whole network of roads virtually car free, by putting those barricades up that force cars to turn but bikes can go straight. For teh most part only the major roads (San Pablo, Sacramento, Shattuck, and Telegraph N-S; Gilman, Dwight, University, Ashby E-W) actually go through in straight lines for cars. A bunch of the barricaded streets have been officially designated and marked as bike boulevards.
Its just that cyclists aren't restricted to those streets (I personally prefer the major roads to ride on - nothing but San Pablo goes all the way from Richmond to Berkeley uninterrupted) so they are going to be around cars no matter how many designated bike roads there are.
But then, car drivers break laws they deem to be unimportant constantly, and it poses just as much risk of accident. Its called speeding, and more people do it than don't. Single biggest factor in fatal and injury accidents - more than cell phones or alcohol. Main difference is when you break laws in a car you may kill someone else. At least when a cyclist is a jack-ass they are mostly just endangering themselves