Date Triggered Email Drip Campaign

Hello,

I am new to Marketo and am struggling to figure out how to set up a program where my customer list will have multiple start dates. I want to automate this so that within a date frame the first email will trigger and then have the remaining 5 emails trigger based off of the previous email send with a wait, as they will be 3-6 months apart. Please help and and start at the very beginning if you could, Marketo is unlike anything else I have ever used. Thanks in advance!