Put yourself in these shoes
Partner has 3-4 card spades. We ONLY want to be in a spade game if we have an 8 card fit, if not we want to be in No trump
Don't seek out 7 card fits, particularly when you are bidding game - don't put yourself in a 7 card fit unnecessarily
For that reason, we can simply bid 3NT if we want - and partner can bid 4♠ with 4, or pass 3NT with only 3 cards. Alternatively - we can bid 2NT which is forcing, partner can now show more about their hand, their options are
Example auction
Here I expect partner to have 5 hearts, 3 spades, 4 diamonds. If this seems complicated, just remember all the bids are natural!
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