Backstory
I'm playing a Bard in my current campaign of D&D 5e and I'm just taking a level in cleric with Lathander as my god (after being inspired/trained by a Paladin of that same deity). Obviously as Bard/Cleric my character has a passionate interest in stories/songs/lore of Lathander, but as a player I know almost nothing about him.
The Problem
The problem that I am encountering is that I've dug through all the information in the Player's Handbook and the Dungeon Master's Guide but found only a tiny amount of information about Lathander. But I really really want more information so I can roleplay my character better.
I feel like I don't understand my deity at all and that makes it hard to act according to Lathander's will, or spread the word, or convert people as a cleric should.
It's worth noting that I am very very new to the D&D lore and settings. So I'm trying very hard to make my character feel a part of this world which they are native to, but which I know basically nothing about.
Where can I find out anything more about Lathander?
I recently stumbled on this podcast which relays a story about Lathander and Amauntaur which was pretty good!
I would love if I could learn some stories like this or really any snippets of information no matter how small.
I'm surprised given how long D&D has been around that there isn't more readily available.
I'll take suggestions from sourcebooks/material (from 5e or previous), fiction, multimedia, or any other D&D source.