I’ve recently downloaded the latest version as I’m looking to build my own custom build CRM, when I have it downloaded, can I get my group of developers to start writing code straight away? Is this something that could be done or do I need to contact support before giving my programmers the green light?
Yes you can start writing code customizations. Of course some considerations of architecture, deployment, and development cycle are useful to have before you start, so you get things right at first. If you have access to someone with experience with SuiteCRM, this will be greatly facilitated.
You can buy consultancy from SalesAgility (the company building SuiteCRM together with the Community) if you want, or you can hire someone else with that expertise.
If your developers are just starting with this, I recommend that they read the Developer Guide