Help

[Jimmymx]

hey all
         I have recently purchased a 1987 mx100 as my first project bike, i am after any tips from more experienced members, where does everyone usually source parts from? any hot tips for hard to get parts? also the oil sight glass is missing from my clutch cover how do i go about replacing this is it possible to buy new glass? any other advise or tips are more then welcome as i am only new to the game. 

[LWC82PE]

Step one - get yourself a parts book and workshop manual for your bike and read them cover to cover to familiarize yourself with the bike.
Step two - have a look on ebay, should be stuff on there.
*tip when searching on ebay is to type part number in search box and click on 'in title and description' then click 'search'