Just went there last month - first big trip to a big mountain (only rode Bear, Summit, and Mt. High - from So Cal). LOTS of things going on, but AWESOME AWESOME AWESOME place.
First off, where are you gonna enter? Few options - California side, free parking, take the giant tram thing up and make your way over to Canyon Express or Sky Express. Then there's the Gondola - more crowded, but it'll get you into the middle of everything.
Depending on where you enter, you have a few options on where to go. Here's how my days went:
Day 1: Entered from the California side. Took the easy green over to the Canyon Express and Sky Express. If you're hanging on the far end of the California side, you'll be chillin here a lot. Canyon is a LOT less crowded but gives you a lot less access to the mountain - you're kinda limited to the right side, which has some nice blues which open up to some blacks (which aren't that bad either). Really fun, and there's a guy that takes pictures on one of the runs - you'll see him from the lift. He'll get you doing this:
(Me by the way...)
Anyway, did a bunch of those runs, headed over to Sky Express. Here's where I think the real fun began. It takes you up to the top, where you can take Skyline - which is a pretty flat run but honestly, I didn't have to walk it or anything...just rolled along. Hint: get a fresh wax before you go up. This gives you access to the Milky Way Bowl (black, mogul, but really, really fun if you're up for it), as well as access to Dipper, Orion, etc. If you go down the bowl, you end up getting dumped out at the Milky Way trail, which is an easy blue, and is (or was when I was there) SUPER empty. Eventually this will kick you out towards Perimeter and Galaxy, some really mellow but super fun blues. Now, keep in mind, from the top of Sky Express, it's a LONG ride down. Get stoked...you'll be on your board for a while (LOVED it). This is way on the Nevada side...so if you want to get to the California side you got some trekking to do. We took Galaxy over to Stagecoach (more blues), did a few of those, and made our way from Stagecoach to Dipper (some flats, no biggie). Dipper takes you up to the California trail, and you can take that back to the gondola - back to the middle of the park. California trail is a pretty long blue as well. If you take California trail ALL the way back down, you end up at Sky Express and Canyon Express. From there, we made our way back to the California parking lot - 2 ways to do this. You can lift it down on the tram...or you can take Roundabout. Bring your A game (you'll be EXHAUSTED by now), it's a long, windy Blue that can get crowded towards the end, and you'll already be tired. To get to this, take Mondo from where Sky/Canon is, and then take Patsy (green lift) and that'll spit you out at the top of a park. Follow the signs, peel right along the slope and you'll get there.
Day 2: Entered from the gondola side. Obviously more crowded, but we made due. First thing - hit Tamarack to take you to the top of the California Trail and ride that down to the Sky and Canyon. Repeat day 1 shenanigans! This time, we spent more time exploring the runs on the Nevada side cause here's what's awesome about them - GREAT mellow tree runs! Make your way to Galaxy again and you'll find Galaxy Woods. It runs right along the groomer so you won't have to worry about getting lost - just keep your speed and your wits up and you'll be golden. Feel free to explore, go on both sides, enjoy the scenery. We made our way back to Dipper to try out some of the Dipper runs - Dipper Bowl (black, moguls), Orion, Big Dipper, etc etc. Great blue runs, you'll kill them. Towards the end of the day we made our way to Sky/Canyon again to do some more Canyon runs. Also, if you go up to the top of Sky, you'll notice - to the left (facing UP the mountain) is the Skyline Trail, to the right...blue runs that spit you out towards Canyon! Really long if you combine them with the Canyon Express runs, so fool around on those. Here's where we made our mistake - turns out there's only 1 way back to the gondola. Well, I don't know if this is really a mistake cause it was one of the most enjoyable chill runs ever. To get back to the gondola from the Sky Express, take Skyline till it spits you out at Big Dipper. Take Big Dipper to the Dipper Express - I linked up with Orion to do this...it'll be obvious. Take the Dipper Express up to the California Trail, and take the California Trail back to the gondola. It's a LOT of riding, but don't sweat it - they'll have a line at the gondola, so it's no rush. Just get your ass back there!
Phew! I think that just about covers it! There's a LOT to the resort so try to get around and explore - there's so much awesome riding to be done.
Oh and what helps is having the trail map available to you on your phone - saved me a few trips!
That's a link to a HIIIIGH resolution one.
Get out there and kill it!
Oh and if park is your thing, there's parks that branch off of the Canyon Express runs...so hang around there.