Should I buy a London Pass?

Only if you plan to visit three or more expensive attractions per day. If you prefer walking and exploring neighborhoods, stick to pay-as-you-go.

Is it better to take the bus or the Tube?

Take the Tube for speed between distant points, but take the bus (specifically the top deck) for sightseeing between central areas like Trafalgar Square and St. Paul's.

How to plan a perfect London weekend

Focus on one area of the city each day to minimize transit time on the Underground. Spend Saturday exploring the historic core near Westminster and Sunday in the markets and neighborhoods of East London.

Choose a walkable base. Book accommodation in zone 1 near a major Tube line, preferably the Victoria or Piccadilly lines, to avoid spending more than 20 minutes traveling between sites.
Use contactless payment. Don't buy an Oyster card. Tap your credit card or phone (Apple/Google Pay) directly on the yellow readers at Tube stations and buses; the system automatically calculates the daily price cap.
Book one big ticket item. Select only one major paid attraction (e.g., The Tower of London or The View from the Shard) and book the earliest morning slot to avoid mid-day crowds.
Map out your walking route. London is a city of distinct villages. Group your sightseeing by neighborhood—don't try to cross the river more than twice in one day.

Should I buy a London Pass?: Only if you plan to visit three or more expensive attractions per day. If you prefer walking and exploring neighborhoods, stick to pay-as-you-go.
Is it better to take the bus or the Tube?: Take the Tube for speed between distant points, but take the bus (specifically the top deck) for sightseeing between central areas like Trafalgar Square and St. Paul's.