From the market list page, there are several ways to quickly find the markets you want to trade:
A list of popular categories is located in the upper left section of the Markets List page. Selecting one of the categories will filter so that only markets within are displayed.
You can also search for the market you wish to trade using the search bar in the upper right of the Market List page. Use a keyword to filter by markets that include it in their title or description.
Filtering allows you to remove markets from the list. The filter section is located to the right, in a drop-down menu beneath 'Categories.' By default, markets with spreads greater than 15% are filtered. The Augur UI also filters out markets, by default, that have high fees or high Invalid risk, as signaled by their order books.
There are also several manual parameters for filtering markets out:
Template or Custom or All - Allows you to filter out template or custom markets. Reminder: Template markets are more likely to resolve as valid, but won't have the flexibility in market question that custom markets do.
Fee - Filter out higher fee markets if you'd like. This is the total estimated fee paid to market creators, affiliates, and reporters.
Liquidity - Filter out markets with thin order depth if you'd like. You can filter out markets that have spreads between their best bids and best asks under 10%, 15%, 20%; or markets with recently depleted liquidity.
Invalid - Filter out markets that have a material risk of resolving as 'Invalid.'
Once you've configured the list of markets you'd like to see (using categories, a search, filters, or otherwise), you may sort the list based on several parameters:
Highest Liquidity (defined as depth-weighted spread, with the most liquid markets showing up at the top)
Highest Open Interest