Cabela's now sells an excellent instructional DVD for the Garmin Colorado Series (300, 400t, 400c, and 400i) of mapping GPS units.
Believe me, as an owner of the 300 I can say that, due to Garmin's VERY limited instructions, if you own one of these units you NEED this DVD.
Once this DVD teaches you all the tricks of how to use your Colorado model you'll find it easy to use. Without this DVD you'll maybe never know all the things the Colorado is capable of doing.
"There are no comfortable backpacks. Some are just less uncomfortable than others."