Sahitya or literature is the elementary way to stay connected with the energies of Guru Tattva. There is a series of divine books available at Guru Tattva to immerse yourself into the spiritual world of Himalayas such as Himalay Ka Samarpan Yog, Adhyatmik Satya, Maa etc. Apart from books, all the discourses of Swamiji are available to support your daily Sadhna. You can explore all the Sahitya here.
In addition to that, you can also download Gurutattva Application from Google Play Store or Apple App Store, which contains all the discourses of Swamiji and Guruma.