Can I just print out the AOS (I-485) / EAD (I-765) / AP (I-131) forms and not fill it up electronically?

No. You have to fill the I-485 (AOS) and I-131 (AP) forms electronically. These are important barcodes. The only form that doesn’t generate a barcode is the I-765 (EAD/Work Permit). The red arrow shows where those barcodes are generated after completing the form. Only then you can print the forms and sign them with black…

Do I still need the DS-156, DS-156K, DS-157, and DS-230 Forms for my K1 Visa Interview?

No, you don’t need those forms now unless otherwise noted on your local U.S. Embassy instructions. They have made the move from paper forms to the electronic DS-160 forms that you can access online.   Read more on: K1 Visa Interview Requirements and Checklist U.S. Department of State – K1 Fiancé(e) Visas: Required Documentation Related…

Can we use blue ink in filling up and signing our forms? Or do we have to use black ink?

All the forms available on USCIS.gov, both on the instruction PDF file and the form itself has it clearly stated: “Type or print in black ink.” or “Type or print legibly in black ink.”  It is a simple instruction and may be trivial for some, but not abiding by this simple instruction may get you…