In competitive auctions, don't push slam - let your default be to keep it low, don't stress if you miss a slam. Just avoid -50!
The mentality for about 80-90% of slams is a discussion with partner, its not a random punt. If you don't have room to discuss and you need to, don't go. There are the occasional hands which, even if partner has a very disappointing hand, will be fine in slam. But don't be overly optimistic and hope partner has an amazing hand.
In competitive auctions, don't fall into the trap of going -50 by bidding too high.
For example
Here you could have slam on. Partner could have a singleton diamond, the Ace of clubs, King of spades, and you will claim immediately - thats only 7 points. However, if you have 2 diamond losers and a club loser, you are not safe on the 5 level. As it happens, that was the case
Partner had a full 10 high card points for his raise, yet you have 3 top losers. Don't go -50!
Be slow going to slam, especially in competition - don't gamble.
The most important signals
Double or bid?
Bid as high as possible!
Defending against a multi 2♦
Transfer or not?
Nv compete
How strong vulnerable?
Preempt suit quality
6322 and 7222
2♣ opening
Doubleton lead
Passive lead
When to lead active
1N with 5422
Takeout double
Negative double
Splinters
Competing partscore
Try not double
Ace Ace King
2 level overcall
Lead Trumps #1
Lead Trumps #2
7 card GOOD suit
To open or not, pre-empt or not
Let the opponents play when they are misfitting
The strongest hand
Be practical
Losing trick count bidding
Favourable vulnerability
Be a nuisance
Big trump fits
What does 3♥ show?
Mental game
6+ card suits
Use puppet stayman more
Don't push slam in competition
The unusual 2♠ bid
Intermediate jumps
Conventions
Choice of equal cards
Don't false card
Never preempt with 11 points
Is the bid forcing?
Double, Double
Double 1NT, next double
Counting Habit #1
Opener rebidding bad suits
Responder bidding bad suits
2♦ opening
Don't split honors
Bid your hand
Bid the contract
Long suits
Long suit defence
Weak dummy
The opponents bid 1NT, make sure you have these bids.
Rebid 1NT with balanced hands
Supporting with 3 cards unbalanced, but only 12-14/15 style
Strength
After 1♥ 1♠ 2♠ 2NT 3♦
1M - 3M = 7ish tricks, or 15-17 points, similar to strong NT range
Points NOT in partner's suit
Points in partner's suit
Does 1♥ show 4 or 5 cards?
Listening to the auction