D & D University
from: D4: Dungeons & Dragons Deep Dive
This YouTube Playlist is a fantastic starter for any newbies to Dungeons and Dragons. The creator has other playlists as well, which will be linked below.
D&D Optimized
from D4: Dungeons & Dragons Deep Dive
From the same creator as DnD University, comes DnD Optimized. Each week Colby creates a new character that is both powerful and fun to play. This is a great guide for any newbies or veteran players.
Dungeon Dudes Character Creation Guide
from Dungeon Dudes
More great creators to help players understand and optimize their Dungeons and Dragons experiences.
DnD Beyond
This is a fantastic site that includes character creation tools, especially if Dungeon Masters have purchased DnD Beyond versions of the rulebooks. Even without that, this provides an easy to use interactive character sheet with the Basic Rules character options available with a free membership.