To create a map not as a chart type but on a Google map:
- Open any dataset that contains data with geo coordinates. In the catalog of public data, you can find such datasets by tag/topic "Cities". To check whether a dataset has geo coordionates, open it in the Dataset Viewer and see if it has the following features:
- It has "Advanced map" visualization available in the right panel
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- It has "Latitude" and "Longitude" fields bound to dimension elements
- Make your data selections.
- Depending on your screen size, you will now see an option in the action bar or right panel for Geo Playground. Alternatively, you still have the option to simply open in a new dashboard to work with it as is.
Click Open in Geo Playground. The following page will open in a new tab:
To add additional data to Geo Playground, click Layer from menu (the three parallel bars) and select data as you would when building a dashboard:
- add existing on the portal dataset (already uploaded)
- upload your own (browse local/paste from clipboard/browse google drive)
After you select dataset new layer will be added: 
After you select dataset new layer will be added: 
As you did it in Dataset Viewer, make selection in dimensions.
You can change the appearance in the Appearance tab. 
Two options are available: Bubbles and Markers. For Bubbles you can change color, border color, size of bubbles, and opacity. 
If your data uses pinpoints/markers, it will look something like this instead:
A wide range of icons is available, and you can also upload your own custom marker, like your corporate logo.
Note: The marker clustering utility helps you manage multiple markers at different zoom levels.
Change name of an added layer. Click Pencil icon.
Note: Clicking the checkbox allows you to show/hide selected layer.
Let's imagine that added layers should be grouped.
To group layers, select Group from hamburger menu at top right of the lefthand panel. Drag and drop a layer you need. 
To filter layers by dimension, select Filter from hamburger menu.
- Name a filter
- Select a layer you want to filter
- Select column selected layer should be filtered
After all your changes click Save. 
After all your changes click Save. 
Then click Save. Don't forget to name your map and add a helpful description.
- You can show/hide layers in a view mode.
- Switch measures (because we've added filer).
- Review passport for selected point on a map.
Customize Data Passports
You may also want to customize the data passports in your map to show/hide some fields, select one field as a title for the passport, reveal some fields only if a user wants to 'View additional details', or resequence the order of the fields.
Select a location to open the passport and click Customize.
Note: If you do not see this option, you do not have edit permission, and should contact your system administrator or save a copy of the map to make your own version. 
You may now select an option you need for each Dimension from the drop-down menu as well as click and drag to resequence the passport dimensions.
Note: if your flat dataset includes hyperlinks to other datasets, dashboards, or external content, or images, these options can be used in the passport, too! Take a look at this example:
Click Save when you are done. The changes you made will apply to all similar passports for this element in your map.
Here are a couple of map examples to illustrate how you can visualize your geocoded data with scaled circles, custom color palettes, interactive timelines, and a mix of standard or custom pinpoints:
