What does it mean and where can I learn more about it?

Thank you

There is some explanation of the -ip suffix in these threads:

http://www.turkishclass.com/forumTitle_9862

http://www.turkishclass.com/forumTitle_43424

and also from ´turkishlanguage.co.uk´

-(y)ip/-(y)ıp/-(y)up/-(y)üp - and, also

Used when there are two verbs with identical suffixes joined by and/also to simplify the first one.
Kalkıp gittik. [not - kalktık gittik.] - We got up and we left
Oturup konuşuyorlar. ( not oturuyorlar konuşuyorlar.) - They are sitting and talking. Gidip bakmalıyız - We must go and see.