We've moved cross-country 3 times in the past 9 years. Not fun!
You can get free sturdy boxes from liquor stores. I know, it sounds funny, but they have a ton of them that hold heavy bottles with handles. Also, try to get some banana and other produce boxes from local grocery stores. You will need to call both places beforehand to have them hold them for you.
Get smaller boxes and pack those with the heavier items, esp. books, appliances, dishes, etc. Clothes that won't be put in storage can go in THICK plastic bags (don't get those thin ones!).
Clothing and paper items need to be put in plastic storage tubs if they are going to be placed in storage.
When packing the truck, think of all the things they are going to need first when they get there and put them towards the back door of the truck.
Rent a dolly to take with you (you can get those from your rental truck place). It helps move several boxes at a time and larger furniture. Get a truck with a ramp or Tommy lift!
Call around and price out your trucks and take the best priced one. They really do differ. Get a GAS truck and NOT a diesel truck. Diesel is much more expensive per gallon than gas right now (double check at your local gas station).
Label every box with all of the contents or a category. Not just kitchen. Put dishes or cups or whatever is in it. That silverware is always one of the last things to find! :)
Use bedding to wrap picture frames, etc. Newspaper to wrap everyday glasses.
Never used a POD, but price it out. Just figure the amount for fuel driving down will be for the truck in your estimation of a rental truck. Most trucks average 8 -10 miles a gallon! Ask them when you call to be sure.
Lastly, bend at the knees when you pick something up. :)
GOOD LUCK!