How do I blow up my air sofa?

How do I blow up my air sofa?

https://www.youtube.com/watch?v=p7N9_IPeOt4

How do I inflate my air lounger without wind?

https://www.youtube.com/watch?v=-5sVJy5WiUo

How do you use an air chair?

https://www.youtube.com/watch?v=Mc6EFOd2eyw

How do you blow up a lazy lounger?

https://www.youtube.com/watch?v=vYw2Nou1_bI