first, please read over how to use the forum. this includes using the search function.
second, perhaps you should pick one model and stick with it.
lastly, on the model, you are being asked to close-sink the point; either path will achieve this. if you have strong paper, the shorter path is easiest. it's easy to get disoriented if you follow the path which asks you to completely open the model, but on the whole, it's probably easier to get a "clean" fold using that method.
imho, you will improve your technique if you work on solving a tough step and completing model, rather than trying several different models and stalling in each one. you have four different help threads going on currently. i suggest you pick one model and stick with it until you complete it. you will often find tricks that will help you with other models.