This page lists sites which can really help.
GMail and GDocs allow you to create an account, if you have not got one already. You will automatically get GDocs when you have an account - and that gives you access to all sorts of goodies. For example, you get a word processor, spreadsheet and presentation software as well as about 30 other products. A really useful extra is Google's Translate tool. Video
Wikipedia gets a bad press because there are errors. However, it is an excellent place from which to jump off into more detailed and informative sites. Wikipedia does give a very good overview. Video
YouTube does not only do music videos. Some people prefer to see and listen to others explaining how something works. Whatever your problem, there is always someone willing to explain the answer in just the way that makes sense to you ... but you may have to try a few before you find that one. Video
Evernote is a superb site and it's free. It allows you to store notes on anything using a laptop, tablet or mobile phone. For example, you might take notes in class or take a photo of the board or even record a discusssion. All of this is the automatically available on any other device. So you might take notes and photos using your mobile and then have these available on your PC at home or the one in the lab via the web site. Video
Google Scholar takes a little bit of effort. However, when you get there it is well worth it. You can access the original work of the people who created the things you are studying. For example, if you are learning about databases then you might like to have a look at the original work by Ted Codd. He was the one who invented relational databases. Go to Google scholar, type in E.F. Codd and you will be able to download his original paper - quoting sensibly from that is sure to get you extra marks. Video
MindMup is a mind mapping tool. Failure to plan is planning to fail. Therefore, planning how you are going to create your coursework will get you more marks. Rather than start with a piece of paper or a word processor, start with a mind map. Then throw everything in, all your ideas in any order. You only worry about the order once you are happy to start creating the coursework. You will probably then find things you have missed and can add them in as you go. Logical coursework gets more marks. Video
Search engines are useful if you are looking specific information, for example, the population of Upper Volta. You should not restrict yourself to just the first few items. It is also helpful to go to later pages to get a better understanding. There are search engines in a variety of languages. You should also be aware that different search engines will return different results, so you may find something that is more applicable in a search engine other that Google. Video