After naming your file appropriately—normally P1-LastName-ProjectName is preferred—proceed to the Top Menu > File > Save A Copy…
You will be prompted with a new window where you will need to choose the destination of where you want the file saved, as well as the format in which to save it. Under the Format pull down menu choose “Adobe PDF”. Seen below.
Make sure that all pages are selected and click “Save” in the lower right hand corner.
At this point you will be prompted by the “Save Adobe PDF” window. Under Adobe PDF Preset pull down menu at the top of the window, select [High Quality Print].
Once this is done click “Save” and your file will be save to the location you chose earlier. Upload this document to Google Drive and move onto the next step: Saving JPGs from Illustrator.