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When i first plugged my SD it didn't show up. Is that normal? When it did show up and i selected the STL file i exported from mattercontrol it just beeped but i didn't see any target heat settings. Another file in a folder located on the SD card brought up a "print status %" where it went to 100% but nothing happened. What's happening here?

I've done a few prints so far and I feel like they came out really well first my first two days of printing. I've noticed little bumps in the layers which i've seen before. What's common cause of these? Is there a page with common print issues for the rostock? ie: printer issue/filament issue/computer issue etc.

Here are my last few prints:
It's kinda hard to tell but on the octopus there are some little bumps. The cat has some little indents. It's hard to tell if there is a patten to them though like one of my arms ejector pins is rubbing at specific point. Would that cause this? or is it more hot end filament related?

Your posted prints do not look that bad. The little bumps usually occur because of some retractions.
Try setting you retraction speed and length.
The SD problems can be caused by a lot of problems but it is usually wire connections. Where the wires plug into the LCD and the adapter for the Rambo they have to
be connected correctly. Try reversing each wire one at a time on the Rambo adapter. If rotating the plugs did not make a difference then ensure they are back to the
way you started. You may have a bad reader on the LCD board, or you are using an older version of the SD card. The speed of the card is normally shown on the front
of the card which is a number enclosed by half a circle. If your card does not have the speed rating on the card, I would swap it out for a card that does have the
speed rating shown on the front.
Please let me know how this all works out.