Hi,

For the Odoo installation, first all you have to do the requirement analysis. The requirement is depend on the number of concurrent users and the modules you are going to use.

1. Analyzing the requirement

For the requirement analysis such as the worker estimation and the memory size calculation, you can have a look at this Odoo documentation: Odoo Deployment

Worker number calculation

• Rule of thumb : (#CPU * 2) + 1
• Cron workers need CPU
• 1 worker ~= 6 concurrent users

Memory size calculation

• We consider 20% of the requests are heavy requests, while 80% are simpler ones
• A heavy worker, when all computed field are well designed, SQL requests are well designed, … is estimated to consume around 1Go of RAM
• A lighter worker, in the same scenario, is estimated to consume around 150MB of RAM

Needed RAM = #worker * ( (light_worker_ratio * light_worker_ram_estimation) + (heavy_worker_ratio * heavy_worker_ram_estimation) )

References :- 

1. Hardware requirements

2. Deploying Odoo

Also you can opt a cloud and expand the plan, based on the usage.

2. Odoo Installation

For the Odoo installation there are a lot of tutorials as well as scripts are available over the internet.

Installing Documentation : Installing Odoo 12.0

Installation Script : - https://github.com/Yenthe666/InstallScript

3. Performance Tuning

1. How to Speed up Odoo

2. Odoo Performance Tuning and Speed Improvements

Thanks