Most of the antivirus software on the internet are free. However, reliable antivirus programmes require you to pay a certain sum of money online. So, first of all you have to determine how much money you can afford to pay in order to buy the rights to use an antivirus.
After determining the cost, you should search for the best antivirus software by reading the reviews of the users which are available on many websites on the internet. Then, download and install the antivirus of your choice. During installation, it will ask you to enter your license key (which you will get after paying the cost) in order to get registered to the server.
On the other hand, if you are not willing to pay anything or you don’t have enough money to spend on the antivirus software, you can simply download and install a free version. Besides, you can also activate a trial version of the antivirus for the time being.
You must know that you have to install the antivirus software according to the instructions mentioned in it. It is recommended to keep its settings on default.
You should keep your antivirus software updated all the time so as to cope well with threats. Additionally, you have to keep its setting on auto protection so that it may detect and remove viruses from your computer automatically.
You will have to renew the license of your antivirus after particular time periods which can 6 months or one year. However, if you are using a free version, you don’t have to use any kind of license key.