How do I print out my 1099's and W-2's in order to attach them to my mailed in return ?

The pin is a self-selected number of 5 digits. the IP PIN is a different story. it's 6 digits and it can be obtained from the IRS website

https://www.irs.gov/identity-theft-fraud-scams/get-an-identity-protection-pin 

you do not include your dependents w-2s on your return. they may need to file their own return.