1. Check whether your school has the right to buy HowNet first. Most schools have it, but you can only view some documents purchased by your own school.

2. If there is a purchase, most schools in official website have a library interface, including the interface of electronic resources. HowNet is probably an electronic resource.

3. After entering HowNet, check whether your account is the name of your school. If not, it is not free, but a personal account. If so, you can look up the literature you want to read on HowNet.

4. In HowNet, the last column of each document has signs of unlocking and locking. If it is unlocked, it means that your school has bought relevant documents. If they are locked, it means that your school didn't buy them.