Onboarding-Setup.md

+# Onboarding Setup
+
+## Installing Node.js
+[Download and install](https://nodejs.org/en/download) for your distribution
+
+## Installing Heatwise
+1. Clone the project
+    ```bash
+    git clone https://git.cardiff.ac.uk/c21048229/cm6311-group-6.git
+    ```
+2. Install packages
+    ```bash
+    npm install
+    ```
+3. Create `.env` file based off `.env.example`
+
+
+## Setup Database Locally
+
+We are using [Prisma ORM](https://www.prisma.io/) and Postgres
+
+1. [Install Postgres](https://www.postgresql.org/download/)
+2. Run `npx prisma migrate reset` to reset any existing database config on your computer and make it fresh for new data
+3. Download the latest pg_dump from a colleague. Due to the sensitive nature of the database, backups are not yet available online
+4. Restore the pg_dump using psql (Typical windows install: `C:/Program Files/PostgreSQL/15/bin/psql.exe`)
+
+**Whenever doing schema changes, be sure to run `npx prisma migrate deploy` after and add a relevant migration text (like git commit messages) for the database change done.**
+
+## Development
+Follow steps on the readme to run tests and development server locally
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