Good advice so far (except for the all-the-parts-on-the-floor suggestion, lol). If this is your first time disassembling a pin (and especially if you have limited time, space, etc and don't want your game out of commission for months), I would recommend a topside teardown only.

If you want to go with a full teardown, Godspeed! Labeled bags are good and a MILLION pictures (same areas multiple times from different angles). Some people even recommend video as you teardown. The biggest challenge for me 1st time I did this was matching up screws of different sizes to the proper locations, which is why I like the labeled bag approach (less chance to mix them up). To make things trickier, you may notice inappropriately placed screws where operators worked on a game in the past.