diff --git a/README.md b/README.md
index ec25769..279c7df 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,9 @@
 
 Use this simple CLI app to import your work logs into the [Worklogs](https://marketplace.atlassian.com/apps/1219004/worklogs-time-tracking-and-reports) Jira app.
 
-For now, the only import file supported is an export file from a [Toggl](https://toggl.com) app. See [toggl_sample_export.csv](toggl_sample_export.csv) file.
+For now, you can import your work logs only from Toggl or from CSV file.
+
+The import file supported is an export file from a [Toggl](https://toggl.com) app. See [toggl_sample_export.csv](toggl_sample_export.csv) file.
 
 ## Setup
 
@@ -11,10 +13,18 @@ For now, the only import file supported is an export file from a [Toggl](https:/
 cp .env.dist .env
 ```
 
-1. Open the `.env` file in a text editor and replace the placeholders with your actual data:
+1. Open the `.env` file in a text editor and replace the placeholders with your actual data.
+
+Env variables prefixed with `ATLASSIAN_` are required:
 * `ATLASSIAN_DOMAIN`: Your Atlassian domain.
-* `EMAIL`: Your email address used for Atlassian access.
-* `API_TOKEN`: Your API token for Atlassian access.
+* `ATLASSIAN_EMAIL`: Your email address used for Atlassian access.
+* `ATLASSIAN_API_TOKEN`: Your API token for Atlassian access.
+
+Env variables prefixed with `TOGGL_` are optional if you use an `--import` option only:
+* `TOGGL_API_TOKEN`: Your API token for Toggl access.
+* `TOGGL_USER_ID`: Your user ID in Toggl.
+* `TOGGL_CLIENT_ID`: The client ID in Toggl from whom you want to export your work logs.
+* `TOGGL_WORKSPACE_ID`: Your workspace ID in Toggl from whom you want to export your work logs.
 
 ## Usage
 
@@ -22,3 +32,15 @@ Run:
 ```
 ./bin/jira-worklogs-importer --import=toggl_sample_export.csv
 ```
+
+## Troubleshooting
+
+### Where can I find these user, client and workspace IDs in Toggl?
+
+Well, these IDs are not visible in the Toggl UI however you can easily see it in the address bar in your browser.
+
+1. Open detailed reports in Toggl: https://track.toggl.com/reports/detailed
+2. In filters select as follows:
+   1. Member => you
+   2. Client => the client from whom you want to export you work logs
+3. Your URL in the address bar in your browser should be like this: https://track.toggl.com/reports/detailed/{TOGGL_WORKSPACE_ID}/clients/{TOGGL_CLIENT_ID}/period/thisWeek/users/{TOGGL_USER_ID}