Rule 1: Use an Adware remover software - My recommended solution is simply to use an adware removal software and follow some simple steps to prevent undesirable adware installation on your computer. Trying a free Adware removal software first - It is usually straightforward to use a free version of any adware removal software. This method is a good one, to check if a software meets your needs as well as experience any support and customer service. I find malwarebytes.org to be the best and it's free.
Rule 2: Avoid P2P - It usually pays to be cautious with the programs you download from the internet. For instance programs delivered using Peer to Peer network (Peer to Peer/ P2P programs) should generally be avoided. A lot of these software intrude computers to install adware, (whether or not their publishers would admit to it), and in practice leave computers vulnerable to virus attacks. Since P2P are commonly used to share multimedia content, this restriction is a challenge for many user. It usually pays to recognise if you are likely to make use of P2P and if so, you should use your preferred adware removal software after each download in order to remove any unwanted software.
Rule 3: Beware of dodgy emails - Another good practice to avoid adware being installed on your computer, is not to open any emails from unfamiliar sources, especially those with attachments. Remember, if an email title looks too good to be true then it is probably a scam anyway so hit "Delete" instead of opening it.
Rule 4: Disable cookies - Unless you know and trust the site you are browsing, you should disallow cookies. Cookies can make browsing the Internet more convenient by allowing your favourite sites to recognise you, but Cookies will also allow adware, including spyware which are programmed to steal important information about you which could end up in the wrong hands.