Edmo uses custom Flaticon icons and the Boxicons library, so you can use any icons from those sources.

For Boxicons, you can preview all available icons here:
https://v2.boxicons.com/

For custom Flaticon icons preview:

HTML Code:

[FlatIcon] Search: <i class="flaticon-search"></i>
[FlatIcon] Shopping Cart: <i class="flaticon-shopping-cart"></i>
[FlatIcon] Arrow: <i class="flaticon-arrow"></i>
[FlatIcon] People: <i class="flaticon-people"></i>
[FlatIcon] Brain Process: <i class="flaticon-brain-process"></i>
[FlatIcon] Computer: <i class="flaticon-computer"></i>
[FlatIcon] World: <i class="flaticon-world"></i>
[FlatIcon] Shield 1: <i class="flaticon-shield-1"></i>
[FlatIcon] Search 1: <i class="flaticon-search-1"></i>
[FlatIcon] Time Left: <i class="flaticon-time-left"></i>
[FlatIcon] Quotation: <i class="flaticon-quotation"></i>
[FlatIcon] Play: <i class="flaticon-play"></i>
[FlatIcon] User: <i class="flaticon-user"></i>
[FlatIcon] Calendar: <i class="flaticon-calendar"></i>
[FlatIcon] Heart: <i class="flaticon-heart"></i>
[FlatIcon] Right Chevron: <i class="flaticon-right-chevron"></i>
[FlatIcon] Tag: <i class="flaticon-tag"></i>
[FlatIcon] Teacher: <i class="flaticon-teacher"></i>
[FlatIcon] Time: <i class="flaticon-time"></i>
[FlatIcon] Distance Learning: <i class="flaticon-distance-learning"></i>
[FlatIcon] Web: <i class="flaticon-web"></i>
[FlatIcon] Lock: <i class="flaticon-lock"></i>
[FlatIcon] Credit Card: <i class="flaticon-credit-card"></i>
[FlatIcon] Share: <i class="flaticon-share"></i>
[FlatIcon] Password: <i class="flaticon-password"></i>
[FlatIcon] Right: <i class="flaticon-right"></i>
[FlatIcon] History: <i class="flaticon-history"></i>
[FlatIcon] Home: <i class="flaticon-home"></i>
[FlatIcon] Chevron: <i class="flaticon-chevron"></i>
[FlatIcon] Right Arrow: <i class="flaticon-right-arrow"></i>
[FlatIcon] Html: <i class="flaticon-html"></i>
[FlatIcon] Tick: <i class="flaticon-tick"></i>
[FlatIcon] Caption: <i class="flaticon-caption"></i>
[FlatIcon] Quiz: <i class="flaticon-quiz"></i>
[FlatIcon] Certification: <i class="flaticon-certification"></i>
[FlatIcon] Experience: <i class="flaticon-experience"></i>
[FlatIcon] Tutorials: <i class="flaticon-tutorials"></i>
[FlatIcon] Self Growth: <i class="flaticon-self-growth"></i>
[FlatIcon] Checkmark: <i class="flaticon-checkmark"></i>
[FlatIcon] Webinar: <i class="flaticon-webinar"></i>
[FlatIcon] Credit Card 1: <i class="flaticon-credit-card-1"></i>
[FlatIcon] Verify: <i class="flaticon-verify"></i>
[FlatIcon] Cancel: <i class="flaticon-cancel"></i>
[FlatIcon] Agenda: <i class="flaticon-agenda"></i>
[FlatIcon] Diet: <i class="flaticon-diet"></i>
[FlatIcon] Vitamin C: <i class="flaticon-vitamin-c"></i>
[FlatIcon] Heart Rate Monitor: <i class="flaticon-heart-rate-monitor"></i>
[FlatIcon] Pineapple: <i class="flaticon-pineapple"></i>
[FlatIcon] Healthy Food: <i class="flaticon-healthy-food"></i>
[FlatIcon] Yoga: <i class="flaticon-yoga"></i>
[FlatIcon] Lotus: <i class="flaticon-lotus"></i>
[FlatIcon] Tomato: <i class="flaticon-tomato"></i>
[FlatIcon] Yoga 1: <i class="flaticon-yoga-1"></i>
[FlatIcon] Yoga 2: <i class="flaticon-yoga-2"></i>
[FlatIcon] Strawberry: <i class="flaticon-strawberry"></i>
[FlatIcon] Guitar: <i class="flaticon-guitar"></i>
[FlatIcon] Certification 1: <i class="flaticon-certification-1"></i>
[FlatIcon] Artist: <i class="flaticon-artist"></i>
[FlatIcon] Translation: <i class="flaticon-translation"></i>