Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
To join the network:
Start the iPad, then when it is started and you are logged on (as needed, if needed) to the iPad, you tap on the
then choose the
and then, from the list of nearby wireless networks that will be discovered, you tap on the one that matches your WiFi router's SSID ... and which probably will have the strongest signal strength as shown by number of bars... and it will connect to the network, or try to... you may have to enter the passphrase for your WiFi router also.
After that, you may print to the HP 6700 printer (since that model is an HP AirPrint printer)
by first selecting, in the app you are printing from, the Action icon or the
(left-pointing arrow) icon...
then you tap on Print,
then you tap on Select Printer,
then you ought to see your HP 6700 printer listed, and you tap on it / its name / its listing, there.
Then you either adjust Print Options, or just tap on Print to send the print job.
That ought to work, but let me know if there are any problems, and I will help you through the particular problem as needed.