# OnClass (Lingo2) > OnClass is an online language-learning platform that connects students with teachers and provides interactive lessons, classes, collections, and study materials for learning languages. ## Main - [Home](https://onclass.com/): Platform overview and entry point. - [Lessons](https://onclass.com/lessons): Catalog of interactive language lessons. - [Classes](https://onclass.com/classes): Group and individual classes. - [Tutors](https://onclass.com/tutors): Find and book language tutors. - [Collections](https://onclass.com/collections): Curated collections of learning materials. ## Help - [Support](https://onclass.com/support): Help center and support requests. ## Legal - [About](https://onclass.com/about): Information about the OnClass platform. - [Privacy Policy](https://onclass.com/privacy): How user data is handled. - [Terms of Service](https://onclass.com/terms): Terms governing use of the platform. - [Offer](https://onclass.com/offer): Public offer agreement. - [Sales & Refund](https://onclass.com/salesrefund): Sales and refund policy. - [Collection Licenses](https://onclass.com/collection-licenses): Licensing terms for collections. ## Optional - [Sitemap](https://onclass.com/sitemap.xml): Machine-readable list of public pages.