I don't want to be appearing to be teaching you to suck eggs but perhaps this will help?
1) You need to find the TDC that happens towards the end of the compression stroke - the intake valve was the last valve to close (look at the camshaft as described in the wikki)
2) When you've found the 0 degrees mark at the crankshaft (and you are standing in front of it looking at it) "history" is on the right hand side - the "future"is on the left! So the numbers on the right hand side of that zero are before TDC.
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