Determining what steps you take to getting going on a Joyent Accelerator will largely depend on what type of hosting service you've come to Joyent from.

If you are arriving from a shared hosting provider, then for the moment, take a look at the Shared Accelerators migration page.

If you are coming from a dedicated server or VPS provider, then you will need to do an audit of the software you're currently using. Determining what software is running on your current system is crucial before moving. Unless you're coming from another OpenSolaris box, you're probably going to have to rebuild your system. You should then take a look at the Introduction to installing Software on your Accelerator, for a discussion of ways to get software on your Accelerator.