Download Gapps for LineageOS for Android Nougat 7.1.1, Marshmallow 6.0 , 6.1.Full form of Gapps is Google Apps so by the name you can understand Gapps are Gmail , Google+ , Google Drive , Google Market/Playstore , Google Musics , Google Docs , Goole Earth , Google Search , Youtube , and etc etc. By the way all these apps are pre-installed on every mobile so you don’t have to download it from anywhere. But if you will install any custom rom like Marshmallow , Nougat then these Gapps will not available.
Download Lineage Gapps
Below are Lineage Gapps packages from folks over at opengapps project.