That type of designation: 30x0 would mean a 3 second negative (eccentric portion designated by the 3) followed by no pause (designated by the 0) and an explosive positive (concentric, designated by the X) followed by no pause at the top (designated by the last 0)..so on and so forth.
Waterbury will drown you or bury you in details, take your pick. Then leave you without a shovel or a lifejacket, take your pick.
And there you will flounder while waiting for the next brilliant article to solve all your problems.