What is the easiest way to read spell details?

wisely

I only manage to read spell details when I open the spell book and when the spell slots are all filled up.

I can't even read the spell details under the special ability of specific class.

Is there a better way?

iKrivetko

The player's manual
On a serious note, apparently not.

Illydth

Open your spell book.
Select spells to fill up your "Memorize" slots
Tap/Hold on a spell to get spell description.

Till you fill your "memorize" slots, you cannot get spell descriptions. Once the memorize slots are full, the tap/hold no longer registers as a "click" action and now works as a "right click/inspect" action.

This bug is filed in the Known Bugs/Issues post.

iKrivetko

Umm, he was asking for a better way, not a step-by-step guide to what he mentioned in the first post.