It's all about using a good technique. Things important to remember:
1.- Never open a laptop if you don't intend to assemble it again before leaving. They often have tons of small pieces and if you don't reasemble it quickly after you take it apart, you'll find it difficult to remember where the pieces were. Even with a manual is quite difficult.
2.- Do it over a table with a white background.
3.- With some black tape, divide the table into sections. One will be...