Website:
Select the coin (ex. Bitcoin) from the coins list presented in Cryptocurrencies menu on the Main page and click on it.
Add coin to Favorites by clicking on the star icon under the coin logo.
Go back to the Main page, click on Favorites and find your coin in the list.
Mobile:
Select the coin (ex. Litecoin LTC) from the Coins menu on Main page and click Add to Favorites.
