John Durfee runs 
http://www.needles4jukeboxes.com, and has the needle for the mm5 for under $20. I buy all my needles form him. Great service, and quality 
Victory Glass is (victoryglass.com) prolly has the manual you need. They  print clean (non xeroexed copies) when you  have your head in the box tracing wiring, you will appreciate a clean copy of the schematic.  Manuals can be readily found in Ebay. 
For discussion, and help 
http://webreports.netlojix.com/pipermail/jukebox-list is still prolly the best, but be  warned,  the regulars can be harsh on newbies, but the epxertise there  is prolly the best. 
For clean reprints of 45's - Oldies.com. Yes you can find 45's at garage sales and Goodwill stores,  but the quality is hit  and miss, I left many 45's  piled on the spindle, left on the speakers instead of the sleeve, piled books on them, etc.  Find a copy of Mom's favorite song on 45. and make it A1 on the selector, she will forgive you both  

Oh yeah, there are free title strip templates  across the 'net, if You have a color printer, and MS word, on your PC you can make your own strips.