Begin by installing and setting up the Google Cloud SDK on your local machine. The SDK provides the necessary tools to interact with Google Cloud services. Follow the [installation guide](https://cloud.google.com/sdk/docs/install) to download and configure the SDK, ensuring you authenticate using `gcloud auth login`.

Log into the Google Cloud Console and create a new project or select an existing one. This project will host your Pub/Sub resources. Note down the project ID as you will use it in subsequent steps. Ensure that billing is enabled for this project.

Navigate to the Google Cloud Console, go to the "APIs & Services" dashboard, and enable the Pub/Sub API for your project. This action allows you to create topics and publish messages programmatically.

Use the Google Cloud Console or the `gcloud` command-line tool to create a new Pub/Sub topic. This topic will be the destination for your CSV data. Run the command: ```
gcloud pubsub topics create your-topic-name --project=your-project-id
```
Replace `your-topic-name` and `your-project-id` with your actual topic name and project ID.

Write a Python script (or use another programming language supported by Google Cloud SDK) to read data from your CSV file. Use Python�s `csv` module to parse each row and convert it into a JSON format suitable for Pub/Sub messages. Here is a basic outline:
```python
import csv
import json
with open('yourfile.csv', newline='') as csvfile:
reader = csv.DictReader(csvfile)
for row in reader:
message = json.dumps(row)
# Call function to publish message (defined in next step)
```

Utilize the Google Cloud Client Libraries to publish each CSV row as a message to the Pub/Sub topic. Here's how to do it in Python:
```python
from google.cloud import pubsub_v1
project_id = "your-project-id"
topic_id = "your-topic-name"
publisher = pubsub_v1.PublisherClient()
topic_path = publisher.topic_path(project_id, topic_id)
def publish_message(message):
future = publisher.publish(topic_path, message.encode("utf-8"))
print(f"Published message ID: {future.result()}")
# Integrate with CSV reading loop to publish messages
```

After publishing, verify that your messages have been successfully sent to Pub/Sub. You can use the Google Cloud Console to check your topic and confirm the receipt of messages. Access your topic and view the message metrics or attach a subscription to review the published messages directly.
By following these steps, you can efficiently move data from a CSV file to Google Pub/Sub without relying on third-party connectors or integrations.