The best packing advice is “pack light.”
(The luggage is actually for six people).
I’m a big proponent of packing using only a carry-on. For the first couple of trips I took to Europe, I checked my bags. When we rented a car it wasn’t a problem, but in 2009, we traveled mostly by train. I often needed help getting the suitcase up the stairs to the platform – either from a family member or a stranger. It was embarrassing and I vowed never to pack that heavy again.
You can find the carry-on bag I use on the Travel Product Recommendations page.
The links below will give you information on packing light. You will learn what to bring along and what to leave home.
Packing – Luggage, Backpacks and Bags
Three Weeks with just a Carry-on
Bringing your Hobbies on Vacation