Important Time Stamps:

[7:00] "Slow" moves

[8:25] Castle as soon as possible

[8:25] Don't move the same piece twice in the opening

[13:25] Make sure you develop all your pieces

[32:20] Avoid equal trades when you are behind in material

[34:25] Watch out for stalemate!

Important Timestamps:

[3:00] Watch out for that f2/f7 pawn!

[12:45], [18:35] Discovered checks

[41:00] Don't give checks just because you can!

[43:25] Perpetual check + three-fold repetition

Important Timestamps:

[0:00] Dealing with unorthodox openings

[7:20] Be careful about pushing the pawns in front of your castled king

[13:35] Knowing which rook to recapture with

[27:10] "Superfluous knights"

[28:08] Avoid self-pinning yourself

Important Timestamps:

[0:00] Why 1. e4 and 2. d4 are common openings

[3:40] Avoid delaying castling

[7:00] The chess clock

[9:02] Pointless checks

[15:23] Keeping your king safe

[30:03] The Pin

[36:30] Watch out for stalemate!

Important Timestamps:

 [0:43] Don't bring your queen out too early in the opening

[8:55] "A knight on the rim is grim"

[13:27] Develop your pieces!

Important Timestamps:

[0:27] Common first moves

[2:22] Losing "Tempo"

[8:30] Placing your bishop outside of the pawn chain

[14:11] Avoiding double pawns, isolated pawns, and double isolated pawns

[28:00] Make sure your pieces have an escape route home

Important Timestamps:

[2:10] Bringing the queen out too early (The Wayward Queen Attack)

[9:30] Principles can be disobeyed if you have a good reason!

[10:55] Fianchetto

[15:45] Being careful when counterattacking

[20:10] Moving the f-pawn can be fine in certain situations

[21:28] When you have no plan, wait until you do!

[27:10] Synergize your pieces

Important Timestamps:

[9:00] Be careful with that f-pawn!

[13:25] Discovered checks are very dangerous

[19:05] Open up the position and attack when the enemy king is still in the center

[21:23] Deciding which side to castle

[30:35] Avoid allowing your opponent to destroy your pawn structure

[34:40] Trying to swindle when you're completely losing

[35:15] Attraction vs. Deflection

Important Timestamps:

[0:00] The 1. d4 opening

[2:35] The Queen's Gambit

[15:10] Prioritize castling!

[17:10] Recognizing a "bad" bishop

[18:25] Do not open up the position when your king is in the center

[25:22] Underpromotion

[28:05] Checkmate is better than gaining more material

Important Timestamps:

[2:20] Don't delay castling

[9:35] Don't move the same piece twice in the opening

[12:40] Untangling from a pin

[16:05] Slow down and use your time

[16:45] Be careful about getting trapped in your opponent's territory

[20:10] Desperado

[29:45] Don't get fancy!