Here are some methods to help you get the best out of Tiled.

There exist different methods for creating the pattern of the Stamp Brush tool. The most basic method would be selecting a single tile from your Tileset. However, painting individual tiles may be time consuming. (eg. an entire building composed of multiple tiles). Luckily, Tiled has a solution. Click and hold the left mouse button on the start of the building tile and drag until your selection encompasses the entire building. Now your pattern is of the entire building and not a single tile of the building.

So, what happens when you need to repeat a single tile multiple times? Easy, the same technique is applied. Instead of creating the pattern using your Tileset, use the Tilegrid. (eg. brush 5 grass tiles onto the grid). Click and hold the right mouse button on the start tile and drag until you reach the last grass tile. Excellent, your Stamp is now 5 tiles longer. This is great if your Tileset is unorganized, as you are able to layout the pattern in the Tilegrid.

Tiled supports multiple sets of tiles. Tiled will also let you use Tilesets of varying width and height. (eg. Your map is 16x16, and so your tileset is 16x16. If you wish, you may use a larger tileset - 32x32). Each tile in your tileset may also have a list of properties (right click).

You may select a group of tiles using the Selection Tool. Three actions can be performed on the selected tiles: cut, copy, and paste. This is helpful if you need to reposition a part of your map. Additionally, cutting a group of tiles is good substitution for the Eraser Tool (it will only erase up to one tile). It is possible to add to the selection area by holding shift, or remove from the selection area by holding Ctrl.