Hi, Miniefan, welcome to the left coast bunch!
A good place to start is Hydroguy's Tips compilation, a sticky thread at the top of this forum. In it, he has 2 thread links specifically for WDW vets who are wondering how to do Walt's Park. However, the whole thread is very helpful!
http://www.disboards.com/showthread.php?t=1520483
Big difference between DL and WDW: offsite hotels are a much more convenient and affordable option. If money is no object, then the 3 onsite Disney hotels are great; GCH is especially fabulous and right there, with a private entrance to California Adventure and to Downtown Disney.
However, if you would rather spend one-half to one-third as much and just have a clean, quiet place to sleep and shower, offsite is for you. Many people on these boards are big fans of the hotels that are located on Harbor, right across the street from the main entrance. Hydroguy's hotel rule addresses this: those "crosswalk hotels" are as close or even closer than DLH or Paradise Pier; they're cheaper, and you don't need a car at all. You can go back to your hotel for a midday break easily.
Favorites on these boards include Best Western Park Place Inn, Desert Inn, Howard Johnson, Candy Cane Inn, Fairfield... off the top of my head. Here's a map that shows the hotels around DL, with links to their websites:
http://www.geocities.com/ashpsyche/DisneylandLinkMap.html
There are a lot of HoJo fans around here because they have a really great rate you can get with the Entertainment coupon book. Right now it's $59 a night for a standard room, $74 for a deluxe, park view room. It's only good for certain days, and those days are often updated or added last minute, so it's good to keep checking. here's the website:
http://www.hojoanaheim.com/phpbb/viewtopic.php?f=13&t=14
As far as packages, it's been noticed around here that you can usually save a bunch of money by booking hotel, airfare and park tickets separately. If you purchase 3-day or more parkhopper tickets from GetAwayToday, you will get 2 magic morning (early entry) days instead of just one like usual. MMs are Sun, Tue, Thur and Sat. GAT tickets usually cost the same as most everywhere else
http://www.getawaytoday.com/TicketListing.aspx?dest_id=2 (sometimes
AAA has them for $5-10 cheaper depending on your local AAA office). GetAwayToday has a discount code, "Podcast" that if you call them on the phone, you can ask to use it and they will waive their $10 processing fee, making the tickets the same price as from DL travel and most other places.
Those are all my best tips and links condensed in one place!

Hope that helps!