1. Cross: We should change the previous method of restoring the cross piece by piece, but grasp it as a whole and restore it in fewer steps.

First, solve every two blocks together, think about the simplest steps, restore these two blocks in four steps, and then restore the remaining two blocks in as few steps as possible.

Then slowly ascend, untie the three pieces together, and finally take back the cross in six steps and twist the cross blindly. Take a look at Zhang Shenjia's cross book.

F2L: In the layer-first method, this step is divided into two steps: corner block and edge block, while in CFOP method, corner blocks are merged first and then returned. When learning F2L, we must first master its basic form. When encountering other situations, we should try various steps to transform the recovered corner into the basic form without disturbing it.

3.OLL: Learn seven cross formulas first. When encountering other situations, use formulas FRUR'U'F and fRUR'U'f to convert them into crosses, and then use these seven formulas to solve them. After that, it is more difficult to deal with the cross situation and the ordinary situation.

4.PLL: Similar to OL, first learn four formulas of prism exchange, then use triangle exchange formula to deal with other situations, and then use these four formulas to solve. Then learn the situations and common situations that need to be dealt with by the two triangular exchange formulas. The formula table is as follows.

5. Operation: Training fast operation, each formula should be completed within 2s. You can't eat hot tofu with impatience, nor can you practice formulas with impatience. Take your time first, but don't stop, keep practicing, so that the speed of using the formula can come naturally.