There are many tips that you can find on the internet. As there are many travelers today who share through social media their travels and also their own tips so you can find a lot. You may be confused when you watch many of them but you do not have to. What you can do is to adapt what is applicable to you. We have our own way of doing things that we are comfortable. If you can improve them using the methods that you can see then it is better.
Almost all you will see that they follow the rule of rolling your clothes instead of folding them to save space. Packing can also differ in the number of days you will stay there. It also depends on the weather. You can bring light clothes when you visit in the summer months and so your luggage is lesser as compared to winter. Surely you will prepare to bring what you think you might need but take a look again. Remove what you might not use except the first aid kit and leave them.
If you can buy something at a cheap price where you are going then you can leave them also. Especially when you will not stay long in one place then you need to pack light. You can also use small bags to organize your things so you know exactly where to look and not have to check all the sides. One tip is to find small containers for your needs like lotion and shampoo so you do not have to bring the large one.