If you don't have a download code for Destiny's beta, you can now access it anyway if you're subscribed to PlayStation Plus or Xbox Live Gold, as announced by Bungie.
But where can you find the coveted download? Nothing easier, as it has just been made available on the PSN and on Xbox Live. If you don't want to have to look all over the place for the installer, here are some convenient links for the web marketplaces.
Time to get downloading, as it's not a small package. It'll take over five gigabytes on last-gen consoles and over 12 on current-gen ones.