A. Here are 3 simple steps you can follow:
Step 1. Erase any personal data
For your computer, you can use free Active@KillDisk to erase data in the computer. You should also "disassociate" your Apple ID from any devides in iTunes.
For your smartphone, you should reset it to the factory settings and erase the SD card.
Step 2. Sell for a good price
There are many trustworthy sites you can sell your old gadgets for good prices, for example, see our previous blog posts here and here.
Step 3 Donate for a course
You can give your smartphone to a victim of domestic violence through Verizon's HopeLine program or support troops overseas at Cellphonesforsoliders.com.
You can also use Dell's Reconnect program to donate computers to a Goodwill store.